I own the RA-1070...I also looked at a few NADs, Arcam, Parasound, and PS Audio. I own two other integrateds, 3020, and 3140 from way back, always been a big fan.
Relatively speaking, the NAD was just a bit brighter, and didn't produce as warm, natural a sound as the Rotel, very close other than that.
I can't really put my finger on it, I really liked the NAD, but I fell in love with the Rotel. Maybe I just wanted something different. I suspect your speakers could influence your decision...either way you'll end up with an excellent piece of gear.