Quote Originally Posted by sheena View Post
Basically, I want the least expensive therm that is reliable, THAT SAID, the Herpstat at spyder robotics is only about $20 more than the Ranco or Johnson prewired at reptilebasics. Do you feel I should spend on the proportional Herp now, because I'd want to upgrade later? My thoughts are, if it's worth it, if I'm already spending 80 I might as well spend 20 more and get a better unit...
Bingo! Do it right once and spend the money once. If you live in an area with ambient temps that fluctuate a lot you're going to want a proportional thermostat; it will help you a great deal in maintaining the proper steady temperature range you're after.

Edit: I speak from experience, if you don't believe me ask all the spare equipment in my attic!