that means the main reason why people chose a rom over another is the experience they get with it?
For the most part, your experience will be the same across all the ROMs, with the exception of the CyanogenMod, which has some unmatched features.
I wouldn't look at DroidMod at the moment, since it's 2.0.1 based, and that's basically been made irrelevant by the advent of ERE25 and ESE53 (2.1 builds made specifically for Droid)
Pete, Chevy, and AdamZ's ESE53 ROMs basically offer the same functionality (2.1 base, 2.1 apps, overclock, wifi tethering, etc.)
They are packaged a little different, have differing looks, but are pretty similar under the hood.
Everyone's Droid is a little different though, so one person's experience will not necessarily translate over to another user's.
People can give recommendations, but you won't be able to tell which one you like the best without trying for yourself.