The RBI-201 is the one that I use and I love it. It works just as well as any of the other temp guns, has the same temp range and everything for a lower price. Only difference is that its Distance/Surface is 1:1 which means that if you hold it an inch away from something its measuring an inch wide square, 2 inches-2 inch wide square, etc, etc. SO if you dont have hots, youll be good to go with this one!
