Forget the 770 for PIMing for now. What the 770 does do, however, is prevent higher-end Palm sales. If you want great WiFi, the 770 is it, not a TX. So, if you have an old unit and were thinking of switching, well, switch to the 770 for WiFi and get a low-end Z (or even keep your present Palm) just for PIMs. I'm still carrying a TE. I'll be glad when I no longer have to.