I have the N900. It replaced my E71. The Skype integration is amazing. :-)
I agree that Symbian is a dead end. I have two books on Symbian development, and Symbian's bizarre form of C++ and their relatively complex code signing system drove me away from the platform.
With the N900 as a vanguard, I'm excited to see just how far Nokia can take its open, Linux-based smartphones.