I have a Jamis Satellite. I use it for commuting. It is steel. I love it. I prefer steel...I think it handles the road better (absorbs bumps better etc.). It is a bit heavier than an aluminum frame, but for me, it is worth it.

I have really liked the way the Jamis fit me also.

I would definitely hit several local bike shops, and ride as many things in your price range as possible!

Good luck!