Hi, I don't have a Treo Pro, but am looking at getting one. The i780 has a 320x320 screen and looks great running 6.5.1 at 128dpi and 96dpi. The 128 dpi is very usable they say and with a theme they cooked up (attached and should work on the treo) it makes the big buttons work well on the smaller screen. The author says he will release his kitchen, so hopefully the tweaks and advances they make can be borrowed onto the treo pro. Check it all out at
http://forum.xda-developers.com/showthread.php?t=537608