I have two of those VE-175s and they are great. They do not come pre-drilled however, so you can take an inexpensive soldering iron and just poke some holes in the sides.

What I did, because my room the snakes are in is a bit too cool to not have supplemental heat(UTH is primary heat), I cut out a square in the lid and replaced it with PVC coated hardware cloth. I use a 60w ceramic heat emitter on a dimmer for the cool side and an UTH for the warm side. The tub is 52" by 22" by 14" high, so it needed a bit more heat so the cool side would be warm enough(80-82 ambient in whole tub).

The lid is also very rigid so I haven't had to use any bungee cords to keep the middle down. I've tried to pull up on the lid when it was clamped down and it barely moves(lifting tub WITH boa, LOL).

My girl is 7.5ft and 24lbs now, so she does need a new enclosure, but for now, she's doing alright and is very comfortable in her home.