I've actually used that one and I think that it's basically the same thing ... When it comes to something like thermostats, reliability is the most important thing IMO and I've yet to see a reliable thermostat or accurate in that price range.

I think for an extra $20 or so you could pick up a Ranco, and while I'm not a huge fan of on/off thermostats, at least Rancos have a proven track record for reliability.

Probably not what you wanted to hear, but it's all I got.

-adam