The one that is best is the one you choose after you go to both websites and compare services.which channels would you want?While there are some channels that are on both services there are also some channels that are not.Be sure to check out start up costs,if you want DVR's there are DVR fees.I have had both services the picture quality is the same on my 50"RPTV.So Good Luck! and Good Hunting!.
Remember, D*'s HD LIL's are all on spotbeams where most of E*'s are on CONUS IIRC. So with D* you can't "Move" to Chicago while living in Atlanta and get the Chicago HD LIL channels.