I like Sterilite just fine. I have about half my snakes in Sterilite and half in various glass aquaria. While there is no doubt that glass looks great, I feel I can observe my snakes just fine through the opaque plastic. And when it comes time to clean tanks...especially the larger ones...I ask myself WHY I even still bother with large glass tanks.
I have used uth with Sterilite...no problem. I presently have all my snakes in a small room that we built at one end of the basement just for snakes. I have the whole room heated to a decent temp and don't screw around with extra heating any more.
I love the fact that, awhile back, I found some 50 gallon Sterilite containers at Super Wal*Mart for 10 bucks each.