I agree with Aaron. Trek models are easy to find as they're readily available everywhere, at least here in CA. They have models in a wide price range for all different tastes so almost anyone looking for a hybrid type bike would find something to their liking in the Trek line.

I think the same quality and variety goes for the Giant and Specialized bike lines, but I've noticed that I can't find those two makers as easily as I've found Treks. I don't know why.