I absolutely LOVE GRRM's Game of Thrones. I'm actually re-reading the series to date, and loving every minute of it. I don't find it a struggle at all, I love all the details and all the characters. I'll be shocked if I live long enough - or he lives long enough - to see the end of the series. Which is too bad because I really do want to know how it all turns out.
I am on the fence about Martin. I've read all of the books to date, and each one was a struggle to get through, but every time I finished one, I thought, "Well...THAT was interesting!" Keeping up with all the story threads was wearing, but each story individually was fascinating. And I'll be reading the next one, if I'm still alive when it comes out, LOL! He isn't very fast...