Not me, they don't suit the needs of ball pythons and it takes quite a bit more work to maintain ideal husbandry if/when they are used. If you have one bp and plan to only have one, a tank is ok if you are willing to do the work but it's usually a constant battle lol...tubs will keep ideal temps and humidity and give the snake's what they need, they're easy to maintain and disinfect also... but you've probably heard this already if you've creeped around here enough.