I helped a buddy buy a very nice 1983 or so Colnago Super a week ago. He paid $525 and it was sharp.
I have owned two RB-1's, and while they are very nice, I would not trade them for a Super.
Buyers' market rules right now.
Look, there are so many deals out there right now, just stick with it for a bit if that RB-1 isn't spot on.