With only a few snakes, tubs are not always the best way to go. Tanks though, are made for fish and NOT reptiles. If you don't want to go with tubs, building a display cage or purchasing a premade one is a much better idea than using a tank.

I have two tanks now that I will end up not using once I purchase pre-made cages for the animals. I find them much more secure, easier to heat and maintain humidity and they look nice (and stack, for when you have a few animals and need the space).

I'll still have my tubs for the ball pythons, though. I have had quite a few that just do better when in tubs than anything that is open or exposed.