[Galadriel55]

I must say that I enjoyed the first book very much, the second and third too, but the fourth was already getting a bit too spread out, and the fifth was completely dragged on and disappointing. Too many characters and too much stagnation. LOTR, on the other hand, combines in itself many plotlines from different time periods without dragging it on with unnecessary inaction.

I remember saying once that GOT has some of LOTR's maturity and HP's addictiveness, which makes it an interesting book to read. Unfortunately, A Dance With Dragons did not preserve this feeling. It brought more complications but did not move an inch forward. I have many favourite characters from the first three books, and, although new characters were brought in to replace the dead ones, I only had one favourite character alive by the end of the fifth book.

So, if the question was just about LOTR vs GOT, I would have said I like them both despite their differences. However, since the question is about the entire series, well, I found ADWD a tad too disappointing, so LOTR wins.