If you got a Nicuraguan (sp?) red-tail they stay smaller and are a good learning snake to get you into larger ones.
Super dwarf or not....a retic is a retic as far as attitude goes....yeah some are pretty nice buy 90% are no where near nice.
Call Mike at Constrictors Unlimited....I just came from there the other day, he can get you in the right area to get a mid sized boid.