even the cheap ones seem to work fine imo.
tested the one I used to have with boiling water and the temp in my fridge. (fridge has a digital temp readout)
seemed spot on and I think it was like 6.99
It's not really about accuracy, it's about speed. The cheap probes I've had, I usually have to leave them in the meat for 20 seconds or so until they give a correct reading. A thermapen will give you a reading in a maximum of 3 seconds, and mine is practically instant, giving me an accurate temperature in about 1 second.
).
