I have two thermapens. The older, super fast red one, is now going on 5 yrs. The newer one, screaming fast orange, is abt 2 yrs old. Both doing GREAT......
I recently purchased 5 of the rt600c thermometers, and IMHO, I would not recommend them for a lot of cooking.... they have a rather long skinny probe and a rather small case. I would think that if used a lot, that would be the weak point and break or come apart there.
Bite the bullet and get the pen if you are serious abt a great thermometer that will hold up.
Smoke-N-My-I's Competition BBQ Team
2 Chargriller SuperPros with SFB's(retired)
2 UGLY drum smokers
Weber 22 1/2" & 18 1/2" Kettle
Super fast RED Thermapen
Screaming fast ORANGE Thermapen
KCBS Certified Table Captain
KCBS Certified Judge