..It really comes down to what will I need my controller to do. Many controllers out there are overkill for most setups not to forget how expensive most controllers are I see the price of most of this stuff going down in the near future anyways. For most reefers out there I would recomend the brand new ReefKeeper lite has 4 input strip temp probe and configures it any way you like and it is expandable! all this for $99 rather than $500.