I really like my Curve...and pretty much everything about it. It's my first BBerry and I'm glad I jumped ship from Palm. But...from day one, the lightness of the device has kind of bothered me, since I come from a history of much heavier phones. I guess I kind of like a "brick".
I got a chance to very briefly mess with the 8800 that belonged to an AT&T sales rep yesterday...and although I didn't squeeze it to check the siderail squeak issue...I have to admit I liked the feel of it a little better than my Curve. It fits my hand well (as does the Curve), I like the weight, and the look is very attractive...but the Curve is a good looking device too, although more subtle.
I don't know...I have another 11-days to figure out what I really want. But...I will probably stay with the Curve.