I have a
WSM and mostly rely on the dome therm that came with it.
For measuring meat temps I use a:
1) Steak Station digital meat therm. This has 4 probes. The temp ranges are indicated by little squares. There are 3 groups of 3 squares indicating temp ranges: 115-125 (rare), 135-145 (med), and 155-170 (well done). Each square lights up when the temp is reached (a plateau is a better description). I know this probe is for steaks and is limited (170), but this is how I use it:
I place all 4 probes through a potato and set it on the grate. I smoke the butt for 2 hours. I plug the probes into the reader then into the meat. For the 3rd time using this, the initial temp has always been at least 135. Then all I do is monitor the dome temp and the squares. I've done many steaks with this and they are always on the low side of being done (as anticipated/desired) so I wait until the last square lights up (170). Then I use one of the other probes (listed below) to verify 160 (or better) has been reached before foiling/panning. Then I remove the probes because they are no longer any use to me.
2) Range Master digital BBQ Fork and Probe therm. This measures temps, but also indicates rare, med rare, med, and well done based on the temp. As the temp rises it starts beeping at the higher end of the well done range (171-199).
3) Taylor TruTemp Instant Read digital therm. I calibrated this one in boiling water and it is within 1 degree of the Range Master.
I purchased these long before ever thinking about smoking. I've owned both of these for a year or more.
I do plan on getting a Maverick E783 sometime in the future (maybe the future is nw...where have I heard that before?? Hmmm). While I hate ordering things on-line I just might have to break down (one more time) and be done with it.
I admit that people need to be anal about some things in life...and IMO, making great BBQ would qualify. So, I'm pretty sure I got this/a process down that works for me.
Any opinions are welcomed. Thanks for your concern.
Bill