The rating of 5 stars is for the clarity of the translation by Dawood of this book, not the message of this book.
Of all translations I have read, 3, Dawood's is the one that best conforms to any acceptable standard of translation. (Others, like the Arberry's "translation" published by Oxford are an "interpretation", or, what should be described as a paraphrase.)
Simply, the Koran is the most hateful piece of writing humanity has ever produced. As a directive for human conduct it is nothing other than a hateful exhortation to commit violence against non-Mohammedans (non-Muslims).  And this translation by Dawood is unencumbered by archaic speech, convoluted sentences and euphemisms that characterise other translations (eg Arberry's) which are designed to soften/conceal the impact of this message.
Anyone who has ever pondered why Mohammedans perpetrate acts of terrorism will find the answers in this book.

In the Koran you learn that the purpose of Mohammedans is to fight & kill:

"Fighting is obligatory for you, much as you dislike it. But you may hate a thing although it is good for you..." The Cow 2: 216;

that fighting and killing on behalf of Allah is for the sake of the believer's own salvation, and not because Allah is weak:

"He that fights for Allah's cause fights for himself. Allah does not need His creatures' help."  The Spider 29 .7;

therefore the purpose of life is god's test of the intensity of the piety of believers. Piety can be demonstrated when believers believe with enough intensity and conviction to be willing to forfeit this life by actively pursuing the killing of unbelievers. Being killed in the process assures the believer immediate entry to Paradise:

"He created life and death that He might put you to the proof and find out which of you acquitted himself best."  Sovereignty 67.2; and

"As for those who are slain in the cause of Allah, He will not allow their works to perish...He will admit them to the Paradise He has made known to them." Mohammed 47.5-6

"If you have suffered defeat, so did the enemy. We [god] alternate these vicissitudes among mankind so that Allah may know the true believers and choose martyrs from among you ...that He may test the faithful and annihilate the infidels. Did you suppose that you would enter Paradise before Allah has proved the men who fought for him...?"  The Imrans 3.140-142 

that only disbelievers refuse to fight and kill for god: 

“Those that believe in Allah & the Last Day will not beg you to exempt them from fighting with their wealth & their persons. Allah knows best the righteous. Only those seek exemption who disbelieve in Allah...”  Repentance 9.44;

and that whether a believer is successful at war by winning the actual battle, or losing their own life on the battle-field, that it is a win-win situation:

“Are you waiting for anything to befall us except victory or martyrdom?” Repentance 9.51

because, dying whilst killing is the most direct route to heaven:

"Let those who would exchange the life of this world for the hereafter, fight for the cause of Allah; whether they die or conquer, We shall richly reward them."  Women 4 .74;

thus:

"Whether unarmed or well equipped, march on and fight for the cause of Allah, with your wealth and your persons."  Repentance 9.41;

and those who refuse to wage war are lesser people than those who do wage war:

“The believers who stay at home ... are not equal to those who fight for the cause of Allah with their goods and their persons. Allah has given those that fight with their goods and their persons a higher rank than those who stay at home. He has promised all a good reward; but far richer is the recompense of those who fight for Him...” Women 4.95

If Mohammedans are unwilling to risk death in the pursuit of killing unbelievers then they will be punished by god and replaced by those who are willing to kill:

Repentance 9:38: "Believers, why is it that when it is said to you: 'March in the cause of Allah,' you linger slothfully in the land? Are you content with this life in preference to the life to come? Few indeed are the blessings of this life compared to those of the life to come. If you do not fight He will punish you sternly and replace you by other men. Allah has power over all things."

The purpose is to terrorise:

The Imrans 3:149: "Believers...put terror into the hearts of the unbelievers." And, Repentance 9:4-6 "Proclaim a woeful punishment to the unbelievers...When the sacred months are over slay the idolaters wherever you find them. Arrest them besiege them, and lie in ambush everywhere for them. If they repent and take to prayer and pay the alms-tax, let them go their way. Allah is forgiving and merciful[!]"

(And this apart from its directives on the treatment of women: Women 4:34 "Men have authority over women because Allah has made one superior to the other...Good women are obedient...As for those from whom you fear disobedience, admonish them to beds apart and beat them. Then if they obey you, take no further action against them. Allah is high, supreme." And, The Cow 2:223: "Women are your fields: go, then into your fields as you please.")

Reading this book helps dispel the idea of "Mohammedan as victim" myth; and the concomitant claim that those who commit acts of terrorism on behalf of their "Allah" are acting beyond the message of this religion.
In one episode of the populist US TV drama "Law & Order, criminal intent", the character Goran challenged a western Mohammedan convert to find passages exhorting the committing of violence in the Koran & then claimed such passages did not exist, when they clearly do!
In the trial of one of the Bali bombers, the bomber used as his defence the fact that he was simply following the directives of the Koran and that he was simply killing non-believers where-ever he found them. But the Indonesian court found him guilty by denying the existence of such a passage in the Koran that would legitimise such killing, even though such passages clearly exist!
Australia's Prime Minister, mindlessly parrots himself, stating over and over, that acts of terrorism are the hijacking of a great religion by evil men. One could go on, but the Koran provides the evidence that the insistent claim that the Mohammedan faith is one of peace to be bare-faced lie.
Dawood's is the clearest translation, and one confident enough to run a parallel Arab text alongside the English (in other editions of this translation).