The CRJ superb? Based on what? The cleanliness of the plane and the engine noise relative to a turboprop? That would make just about any jet with a decent cleaning crew "superb." If you're worried about prop engine noise then consider buying earplugs. I've actually found they work on jets as well.

I'll agree that the plane is quite... Quite small, quite uncomfortable, quite difficult to fit a bag in the overhead. The windows are quite mis-aligned and it's quite difficult for a male of normal stature to use the lav. From a pax standpoint the E170 leads the pack in RJ's but I'd still hesitate calling it "superb."

May I suggest you revise your criteria?