Artemis Fowl on Amazon.co.uk believes that William Nicholson’s Wind on Fire series are the best whilst Jonathan Stroud, author of the bestselling Bartimaeus trilogy rates Grettir’s Saga as number one.
Ciao.co.uk has JK Rowling’s Harry Potter novels filling the first four positions, Area 51 on geocities places George RR Martin’s A Song of Ice and Fire top of the pile.
Lib.ru has The Lord of The Rings at number one and so does interzone.com.
So, the Lord of The Rings is definately number one, still, at this moment in time but a lot of the sites rate George RR Martin’s work very highly.