more advantageous

See: preferable
References in classic literature ?
The fact is, gentlemen, it seems there must really exist something that is dearer to almost every man than his greatest advantages, or (not to be illogical) there is a most advantageous advantage (the very one omitted of which we spoke just now) which is more important and more advantageous than all other advantages, for the sake of which a man if necessary is ready to act in opposition to all laws; that is, in opposition to reason, honour, peace, prosperity--in fact, in opposition to all those excellent and useful things if only he can attain that fundamental, most advantageous advantage which is dearer to him than all.
A prince is also respected when he is either a true friend or a downright enemy, that is to say, when, without any reservation, he declares himself in favour of one party against the other; which course will always be more advantageous than standing neutral; because if two of your powerful neighbours come to blows, they are of such a character that, if one of them conquers, you have either to fear him or not.
To this the Roman legate answered: "As for that which has been said, that it is better and more advantageous for your state not to interfere in our war, nothing can be more erroneous; because by not interfering you will be left, without favour or consideration, the guerdon of the conqueror." Thus it will always happen that he who is not your friend will demand your neutrality, whilst he who is your friend will entreat you to declare yourself with arms.
This latter question need not be further discussed at present; but when Thrasymachus says that the life of the unjust is more advantageous than that of the just, his new statement appears to me to be of a far more serious character.