I have had the 8700, 8100, 8800 and now the Curve. I loved the Pearl the best because of the size. If the Pearl 2 had come out before the Curve so that I could have had Wifi I would have bought the Pearl 2.
I also support the company's cell phones/BES that I work for and the President of our company wanted the Curve. Knowing he would have questions on how to setup the Wifi I bought one for myself. It is a good mix of the two phones (Pearl and 8800). I like the size better than the 8800 and I like having a full keyboard. But the Wifi is the best feature for me. I miss my Pearl on the weekends when I throw the phone in my pocket, but the Curve is still way better than my old 8700!