Initial review re:
http://www.thermoworks.com/products/low_cost/rt600c.html
Received quickly from vendor. Tested but not used yet.
Fast and accurate. Longer than I am used to, but that can be an advantage when reaching into a pit or oven while trying not to burn yourself.
Min/Max temp auto-temp hold feature is neat.
The reset feature is probably redundant as it works much like the on/off switch. Further tinkering will tell the tale on that one.
One hour auto shutoff is more time than I need since I only use them for an instant read. When leaving a therm in resting meat, I use a different therm.
A switched back-lit display would be nice, but would add to cost and reduce battery life.
Two screws have to be removed to replace the battery, but if it achieves the claimed 5000 hour battery life, I will probably never replace one. Even so, it is probably the most common mini battery on the market.
The only real negative I see is that the display is small and may be hard to read for anyone with marginal eyesight. Still, I can read it without resorting to my reading glasses.
For a purchase price of $16 plus $5 shipping to my door, I am very happy with this unit.
Good luck and good smoking.