I've been using an
Oregon Scientific Model AW129 and I don't think I'd really recommend it for anyone else due to a couple of annoying flaws. (It only worked twice, in total.)
1.) It doesn't allow you to select a temperature, instead requiring you to tell it what kind of meat you're cooking (from a pretty limited variety) and how you'd like it done. It doesn't allow you to account for carry-over or cooking things in multiple steps that don't require dishes to be fully done in the first step.
2.) It likes to randomly lose sync between the probe and the display unit. Repeatedly resetting the units and replacing the batteries and swearing in it's general direction sometimes fixes it. For 5 minutes. And then you get to try again.
3.) After the second use (both being done indoors with the unit being cleaned and put back in it's box after each use) it decided that it'd register 40 degrees higher than the actual temperature. (And required me to -really- hope that this mis-reporting would remain linear as the true temperature went up. It didn't.)
So, yeah - I'd advise against people purchasing this thing. I'm looking to be rid of mine as soon as the next garbage day rolls around.
-Pete