I switched to tubs back when I had one snake and I never looked back. Easier to clean - FAR easier to clean, a snake that fasted for 8 months started to feed within 2 weeks (kicked myself for not changing sooner), and visibly relaxed in a tub.

If I want to look at my snakes, I take them out - I know that they like the burrow effect of a lower ceiling enclosure, which makes tubs the perfect enclosure, IMHO.

I've also taken in several ball pythons that were surrendered to my local pet store or through Craigslist that were reportedly not eating for their previous owners and were all kept in glass enclosures that were too big for them. Within 2 weeks of being set up in tubs have eaten for me each week with no fasting.

I have no trouble keeping proper temps (I have 11 free standing tubs as well as a rack for the others), and I keep my apartment pretty cool year round.

It cost me far more money modifying the tank to keep temps and humidity correct than it ever has for a tub. My snakes are thriving, eating, defecating, breeding - they're happy so I'm happy!