I think the radio was changed the last few days before release, after the froyo leak. Quite a number of people have posted about the improved OTA radio, and there have been a few that moved from leaked froyo to OTA, that mentioned they did in fact see better reception with froyo.
So I'm sticking with OTA rooted (and probably deodexed one of these days).
So I'm sticking with OTA rooted (and probably deodexed one of these days).