Buda or Pest??? that was the question on my mind while searching for accomodation.
I made the choice to stay @ Pest side partly because of attractive rates offered by the hotel (more on that later) and i think i would chosen to do the same if given another chance.
Pest is really the activity centre -- lots of shopping, eating (and i guess partying for the younger ones??). So it has a more lively buzz. and lots of choices. Whereas Buda gives one a more laidback feel and it's where quite a few sights are located, the BUda Castle, Fishermen's Bastion, Gellert Springs etc.
i prefer to be closer to the buzz :)