You could get one Thermapen and one ThermoPro. I have decided that I like the ThermoPro better, but I've only had it for a few months. I keep the ThermoPro in Los Angeles and the Thermapen in Cathedral City. We spend approximately equal amounts of time in either location.

One for you and one for her, right?

Not sure why you’d need more than one. I’d take the money saved and put it towards a Smoke. Love that thing.

you need one of each type ... one that measures temp at a snapshot in time, and one you can attach to a thermometer as the temp changes

Yep, that would be the Smoke. It’s designed for smoking which I don’t do, so it comes with one probe for the air and one for the meat. I either use it that way to monitor my defective oven, or, I’ve bought additional meat probes so that I can monitor multiple roasts at a time. I bought one for my in-laws for Christmas recently, when they were on sale.

"multiple roasts at a time"?
I only need one.....

We have another ThermoPro that we use for our Big Green Egg, and it will measure the cooking temperature as well as the meat temperature remotely. This way we can monitor cooking from indoors or outdoors, depending on our whim.

Linda - Two examples:

I buy whole pork loin, cut into three, roast all three, eat one freeze two for SV reheat later. In fact I’m having one tonight. Might be the oven but these three fairly identical roasts on the same sheet pan finish at different times.

Leg of lamb - I’ve taken to separating them into the four main muscles so that I can remove the bulk of the fat and gristle. And get more charred crust. These are different sizes and finish cooking at different times.

I purchased one

She did find the ThermoPro while looking for what I was buying. She kept saying what's the difference that justifies the price difference. My response was I dont know buy one and we will see. So, she did and we will see

I have one. I am the only cook and would be using it on one item per meal. I use it on every piece of meat I cook.

Looking on Amazon, I'm not seeing the difference. Many things that look just like a Therma-pen are listed as Therma-pro. Reading this post, I got the idea that the Therma-pros would always have wire that goes outside the oven. Please explain what you all have?