Which WM6.5 did you have? I have a tilt 2 and it blows away any phone on the market (after I reloaded the ROM without all the ATT crap on it).
Problem with windows mobile was the carriers and hardward OEM were allowed to do whatever they wanted. Which ironically is the same problem Droid will face as well. Droid will sell in large numbers but the user experience will kill it as people complain after buying a cheap droid loaded with bloatware from the carrier. Same thing happened to windows mobile.