its all opinion.
I just finally left my 8700 recently. THe size of my curve is much nicer. Althought I did find the 8700 slightly more comfortable to type on, the curve isn't so far off! I do like it much better than the 8800. As for the trackball, it is nice, I do like it better, but I do admit and agree with you, the curve no requires a little more two handed use sometimes. There are certain things I could have done with 1 hand on my 8700 that I could on the curve.