Okay, so - I use a Google Android phone (Samsung) - the Nexus S. I bought it cheap when I was in Hong Kong and have had it for almost a year now, and I really like it. I beat it up a lot (drop it, scratch it, and generally treat it roughly) but it works every time. I've noticed it's become a little slower in the last month or two, but really, I can't complain about it.
I think I would like an iPhone just as much, but they are so damn expensive! :(