Pro products and reptile basics I'm pretty sue both have 10 year warranties.
As for the cage PVC will last you forever where wood won't do to moisture. Plus PVC is light and easy to move where wood weighs a ton. I built one of my bearded dragons cages out of cherry and it weighs a ton! If I could do it again I would of used PVC. Good choices are animal plastics, boaphile, and vision. Any of these companies you should have no problem heating your cage as long as you have the proper rhp.
Don't get a screen top! Kills humidity, idk what the humidity requirements are for a boa but either way I would get a cage with sliding front doors or swing open doors, I like the sliding doors the best though but that's just my opinion. I would think it would be easier to move your hand straight out of the way then up and out of the way. That's also a good thing about sliding doors, you can open one just enough to get your feeder in or the tongs with f/t in so then you dont need to have the door wide open for the chance of getting bit, you don't really have that option with screen tops and swing doors.