Yep I've also flown on XJTs long RJ
flights and have quite enjoyed them. There isn't much difference except for IFE, but most of the 733s and all of the 735s dont have any anyway. I'll take the smaller plane-- youre on quick, youre off quick, you fly fast and high and you get where you need to be.
I definately prefer the atmosphere of those little EMBs!
Anyway, the CRJ would not be as comfortable as the ERJ (IMHO) but congrats to Delta for expanding the domestic market out of ATL
yet again. Best of luck to them.