I really don't have any qualms against Vision. Actually I think they look better than Animal Plastics cages in a display setting. Reptile Rapture in Madison, WI uses Vision in their shops and that place looks ON POINT.
However, as others pointed out they really aren't the best you can get for the money anymore. They used to be the "Cadillac" of cages but their price ended up being their Achilles heel. Not to say I don't like them....I will snatch them in 10 minutes if I see one on Craigslist.
Animal Plastics is now much cheaper overall, cheaper to ship, and they use better material. One of the downsides being that you have to assemble them yourself but it's not difficult at all.
Animal Plastics earns the good reputation that they have. They have taken over the industry, and for good reason.
I use T8's but as Sauzo pointed out they are pretty short in terms of vertical height. I was just a cheapskate when I ordered them ....