From the boards, I understand a thermostat is absolutely not the item to skimp on, but in researching them, I am not sure I'm 100% on exactly what I'm looking at feature-benefit vs. cost-wise.

I had planned on spending $100 - $150 on a thermostat, but will spend more if it makes sense for my needs. I will have a single ball python in a 48" Polyethylene cage (Showcase Cages). I was looking at Vivarium Electronics: http://www.vivariumelectronics.com/Products.html

I'd seen some good feedback on these thermostats, can I assume they are still a good option? And if so, is there a particular model that would make the most sense?

TIA.