I'm not sure that I've ever particularly noticed which publisher a title came from. I suppose at some point in the past a publisher with a reputation might mean something, but these days I generally go to a site like goodreads.com when looking for a new author to read. Peer-to-peer reviews and independent suggestion engines that say what other people who liked books that I like also liked work very well for me. Before I started using them I was often picking up books that I really didn't like. These days I have more good stuff in the stack than I can possibly read.

EDIT: I should note that Baen is an exception. If I want to buy a book, I go to Baen first. If I'm just looking for something new, I go to Baen's site first. This is because they're pretty much the only publisher that does eBooks correctly.