as a mac user, i usually use macrumors for my main source of info and there is a lot of great info mac users have that mac techies may not have
so i always recommend macrumors as the very first resource for anything to do with mac
as a pc techie, i use experts-exchange since it's mostly techies (pc, mac, and linux) where macrumors is mostly non-techies and mac fans who work outside of the computer industry