I loved all the books in the series, and I think I was excited about reading ADWD because during A Feast For Crows I was so curious about what everyone else was doing, and how their stories were going to continue.
I loved Tyrion, but the whole "Where do whores go?" Started to bug me, although, once he was on the boat with young Griff and the others he became one of my favourites again, especially when he was taken a slave.
It's funny how during the series different characters/ stories started to shine, and the favourites list would alter throughout.
Definitely agree! There was a while in the books where Littlefinger was my favorite purely for how well he played the game.