I guess I'll throw in my two cents on thermometers.
I've been using Thermowork's Thermopens for many years. I use one for outdoor grilling and indoor grilling. They have always been reliable and made final pull-off from oven or grill so much less stressful.
For the past 20 years or so the big test comes for me when we cook our standing ribeye roast for our Holiday Party the first Saturday after New Years. It is cooked in an oven. We always go with as big a roast as we can - often a bone-in the 24lb, 25lb plus range. Each year I write extensive notes about each roast and each party. My daughter for Christmas three years ago even made a book for a present for me out of my notes which makes it even more special. It's called "Throwing the Deale Holiday Party".
Up until this year's party, I used a tried and true forward sear method with careful timing of cooking and resting and checking with the invaluable Thermopen. Years of notes also help nail the big roast every year to a nice medium rare temp with nice crust.
This year I went with a radical method change inspired by a French chef I saw on the internet. I went with a reverse sear. To do this I needed an in-oven thermometer with an alarm. I went with a Thermoworks DOT. To be fair, I tested this method on a 14lb bone-in ribeye for our Christmas family dinner two weeks before and with a successful first flight, I decided to go for launch on the big 25lb bone-in ribeye for the big party. My family was a bit worried about my radical method change from years of practice but fortunately



25lb roast turned out fantastic! It was also very evenly cooked and incredibly juicy.
I can recommend the Thermoworks DOT. It's not that costly and worked well. And with a flat metal "T" strap that I bent in my work vice to fit my oven door handle, I was able to fabricate a nice holder that is secure, in easy view and holds the DOT with its magnet.