I have two Bering Optics Hogster-R 35mm thermals, and have been really pleased with them. Several hunting buddies are also running Bering Optics.
Pros:
Very affordable. Paid ~$2400 each.
QD mount holds zero within 1-1.5MOA
Lightweight. This is a big factor that many miss, especially if you’re not running a separate spotter.
Can have 4 rifle zeros stored in each scope.
Cons:
CR123 batteries only last 4 hrs.
Does not record.
Notes: I have compared them to high end thermals, and have yet to be convinced to make a switch. Clarity is not as good, target ID is 400 yds, not 800 like some scopes. It can be a slight handicap coyote hunting, and the lack of a LRF can be a hinderance, but for hog hunting I have very few complaints.
I chose to buy two and have a spare to loan out, and it proved to be WAY more fun than just one fancy thermal. I’ve been able to get a lot of buddies into thermal hunting as a result.