I don't know how many snakes you intend to keep or how the tub(s) will be placed, but let's say if you have a 3' shelf or similar space, you can buy one 3' strip of 4" flexwatt from Reptile Basics with insulator cap and wiring pre-installed for around $20 including shipping. The 3' strip of flexwatt will be long enough to heat 3 15qt. tubs side-by-side or 2 32qt. tubs side-by-side. Unlike the standard stick-on UTH, you don't risk the chance of breaking the flexwatt by moving it around because all you need is aluminum tape to hold it down. You can just peel off the aluminum tape (available at home depot and other hardware stores) and put a new one on. Flexwatt is cheaper by the square inch, easily and safely portable, and i also find that it produces more evenly distributed heat than the zoo med and exo-terra UTHs. Again, this recommendation is largely dependent on how many snakes you want to keep and how your tub(s) are placed. Even if you only plan to keep one snake, it may be worthwhile for you to look into it.