The tubs are ok. Most people do prefer the pvc enclosures because they do tend to hold heat better, but that can fixed by keeping your room temp up a small bit and/or adding a slightly higher watt UTH, so it's not a huge issue.

OUR Walmart does NOT carry these tubs, even around Christmas. Makes me mad. So if Iris still makes them, so much the better. They are popular among herpers. If I ever do come across some, I'll be buying several whether I need them or not.