First off, let me say that I have the coolest wife in the world. We went into our local exotic pet store today and she held a Red Tailed Boa and has fallen in love with the idea of having one.

That being said, I need a refresher course.

Boa consrictor imperator vs Boa constrictor constrictor

What's the difference as far as temperment, color, size, etc...? What's the best route to take and why?

Thoughts, feelings, and opinions are being sought here so put your 2 cents in please.

Thanks in advance