Keep it or lose it?

I am on week three of a 30 day trial with this phone with ATTws. I have yet to try the "EDGE", mainly because I haven't had the time nor the USB cable (my SONY PCG-C1VN dosen't have IR) to test.

The only feature which I absolutely love about this phone is the speakerphone. People don't even know that I am using it! And, of course the GSM gets better reception than the crappy TDMA which I have been using.

Thanks for any advice!