I just wired my Flexwatt and hooked up my Herpstat this evening. I'm quite impressed! Super easy setup, accurate, and proportional! Dion at Spyder Robotics sent it super fast and great customer service. I can't comment on the rest but proportional thermostat is the way to go. I'm of the opinion that the more accurate I can keep my temps the happier and healthier my snakes are. On/off just can't do that as well as a proportional. That's facts, not fiction.
Regards,
B