I am looking into getting one this weekend. I have found a couple and am wondering what everyone's opinions are, such as who used what and why its better??!!

http://www.bigappleherp.com/Rheostats

http://www.petsmart.com/product/inde...ductId=2752604

Here is one I could get IF still available!
http://www.ebay.com/itm/Temperature-...ht_1410wt_1163

This one I am leaning towards the most to be honest!!!! (If the above one is gone of course)
http://www.amazon.com/Hydrofarm-MTPR...ile+thermostat