To PDA or not PDA

I am constantly reviewing whether I can use a PDA or not. I have owned enough of them. Currently I have a cool TH55 Clie from Sony. It has wifi, beautiful screen, etc. But I am a heavy cellphone and laptop user. Do I really use the PDA that much? today I was playing with Avantgo. It is especially powerful with the wifi connection. I can get into a Starbucks, and sync up and get local movies, weather and other info.