Milwaukee: Great features, great bang for the buck.
Fluke: Great reliability, their Festool Connection devices work great, there might be some thermal reporting features you like.
Flir: Far better imagery at lower thermal sensor resolutions, thanks for MSX contrast enhancement.
What's your budget? What's the return on investment?
The newest Flir devices are said to have built-in WiFi connectivity.
Flir has pocketable devices, the C2 and new C3, although handhelds might provide you with better features. I like my E4 handheld better than my C2 sample.
I would stay away from smartphone-dependent devices for serious work.
Flir's computer software allows you to modify image displays.
If I were in your shoes, Flir's E4 ($949), or newest version of that, is where I would look first. It's what I own, and I think it checks all your boxes. If you need higher thermal sensor resolution, features, or video capture, you'll have to spend a lot more.