Yafe, my only CP, rocks. He's beautiful, eats like clockwork, is a display animal, and is getting pretty good with being handled. Not that he was bad, but he's calming down even more.
Having said what I said above, I love my boas. Not quite as "movey" and seemingly inquisitive, but I love the gentle nature of boas. They are somewhere between a Carpet and a Ball to me. Pretty compliant, but not pet rocks either.
I will reserve judgment completely until Yafe is full grown, as are the boas for that matter. Maybe a 7ft Behira will be too much? I don't think so, but in all fairness, I should mention that.
I will add that Yafe is an aggressive feeder, but has yet to strike at the doors, etc. like 2/3 boas do (hence the drapes). So, that's a bonus.
I think it comes down to what type of personality you like in a bigger snake.
Either way, you cannot go wrong.