I've used both a zoomed uth and a sunbeam human pad. I had the zoomed to begin with, it came with the snake but i quickly found it was getting over 120F without a t-stat. Also it had a couple "hot spots" which led me to buy the sunbeam and couldnt be happier with it. On it's lowest setting the temp is around 87-90 and next setting is 90-95. It has been very consistent so far, while the UTH actually varied ALOT more. Could just have been its time to start going out.

Oh and the HHP cost me a whopping 10 bucks and was 1.5x's bigger than the zoo med. If you do get one, make sure it doesnt have auto-shutoff and they come with a cover that i found unneccessary.

However I am going to be getting a rack built and will be getting flexwatt to replace the HHP. Definatlly the best choice in my opinion.

HTH
Jeremy