Without a doubt there more features than xboxmod's HD... but the HD was rock solid. I have been using Rhodium lately after the chefs worked out most of the bugs... but this next "jump" to official 2.1 seems to have introduced a lot of alpha-ness into the ROMs.
Then again... with the recent rapid movement of 6.5 ROM versions in THREE different branches (why, oh why?) I don't know where 2.1's problems stop and 6.5's problems start.
This is the price of a slick bleeding-edge ROM, I guess.