Im in the same boat as Nella. I have a very basic $20 phone, pay as you go. It looks like crap but it's durable as hell. I dropped it and it fell in 4 pieces but it went back together easy and still works perfectly.
My sister has something very similar to the sidekick and it's a beauty. I think that will be your best bet. The qwerty keyboard is gonna be great and you'll get used to the rollerball sensitivity pretty quick. I just think that if you get the Samsung you're going to have to be very careful with it. I would be scared to own anything so thin and the possibility of ruining the touch screen sucks aswell.
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