What do you mean by OG Droid ROMs? I don't recall any Original Gangster ROMs.
Mind you, I'm pretty "hood" myself. lol... Just be sure to enlighten me if it means something else now.
Anyway all kidding aside as, for as long as I've been in "the game" I've tried more ROMs than I care to admit publically (I will admit to being a geek, but nothing more!).
My review is that all the Froyo I've tried works well. But I always return to Chevy's ROMs & kernals for the frequent, speedy and useful updates, and Peter's Bugless Beast.
Peter doesn't appear to update anything non-crucial until his next big release. I like that I'm not bothered by too-frequent updates but I know if something comes up wrong with Chevy's I know it is sure to be assessed quickly.
Chevy & BB will always be reliable, fast, efficient, and have improvements over any stock phone ROM. Also they will both offer a stock phone theme (my personal preference) and both have the potential for themes.
Speed is affected by the user's phone as we've learned two identical phones may prefer different kernals , customized UI options are all personal preference. So I won't tell you one "feels" faster than the other.