I just bought the Q and its one of the best phone i have ever owned. I am in love with it. I'm finding out later today how compatible it is with my computer. keep your fingers crossed.
I have the Q and it's great but it doesn't match some of your criteria.
-It's over $100 no matter where you get it.
-Syncing with OSX requires The Missing Sync ($40)(a great program)
Other than that it's great for messaging of all kinds, is multi-talented, and has a good camera.