I've had Johnson Controls, Rancos, Herpstat, and Helix.

I currently use Rancos and Herpstat's.

The Herpstat's are nicer than the Helix in my opinion, especially the Pro model that I currently use.

I also prefer the Ranco over the JC, BUT they're pretty much the same. The JC is able to have a night drop hooked up to it though if you needed to.