Best ATO for rimmed tank?

[Reefhaven]

Hey guys, looking to add an ATO for my sump. Sump is a 40 gallon breeder tank and going to use a 10 gallon tank as the reservoir. Both the 40 and 10 gallons are rimmed. Looking to spend no more than $100. Was thinking at the reef breeders prism ATO. TIA

 

[Bouncingsoul39]

Check out the AutoAqua Smart ATO lite. Very tiny sensor and works well.