The temperature controller is working great! I can't be happier with my investment. (40 bucks for the near new freezer and 50 bucks for the controller at a local HVAC contractor supply warehouse)
The controller seems to be nicer than what is offered at most HBS. It is digital, controlls from 0 to 212 degrees F, has variable differential from 1 to 30 degrees(the number of degrees the compressor stays on after reaching temp goal before shutting off), and can be set to heat mode(for plugging in a warming strip during the cold months).
All I had to do was wire it up.