I went with the IQ becuase of the price. It is simple and easy, with no frills. I did have to re-solder the contacts for the temp probe and power on the main board as they came loose. I am a bit rough with my toys. Other than that, I have had no problems.
I don't know if I could justify something more expensive at this point since all any of them do is blow air when the temp gets too low. I have checked the accuracy of the temp probe and have been satisfied with it's accuracy.