A beat to death question but She might be sayin there's a chance!!!!!!!

[Daybreaker]

I can't say for which brand I like since our vivs are homemade (if they're done correctly they can last a long time too).

For size, my '10 Colombian male is about 6' - 6' 1/2 feet and he's in a 4 foot x 2 foot x 18" high viv and it's perfect for him. I like 18" height for boas personally, IMO length and width are more important over height. His viv has two acrylic doors that are on hinges that open downward: I really like them since I only need to open one door to feed or clean but can open both if needed.

I have one of my bigger '10 Colombian female (a little smaller than the male) already in a 6' vivarium so she can grow into it. She has sliding glass doors on hers and I can't say if I like those better than the dropping, but I do like the acrylic better than the glass. Just preference.