Aside from the TX having a larger and higher quality display, as well as built-in WiFi, it has a faster processor (312MHz vs 200Mhz) and a heck of a lot more memory (128MB vs 32MB). Given those four advantages, the TX is most definitely worth the extra $100.
it seems that the palm TX and E2 are excatly the same except that E2 is about $100 cheaper... a wifi card could be used with the E2 so that it could connect to the internet just like TX...
Is it worth it to pay the extra $100 just to get a bigger screen and built in wifi? (or maybe I am missing something here)