If you mean gauge wise you should try to grab the exoterra digital 2-1, this is the one I have had the best results with. To be honest though I use thermostats on all my tanks, this way is headache and worry free really. They are really good for those up and down temps in the summer months, You don't have to worry about your temps going to high and cooking your frog while your at work or out and about if you get a really hot day.