To touch on the LRF aspect brought up by
@Woodsman1991
It is 100% a fact that judging an animal's distance through thermal can be difficult to start especially if it's wide open and you are a thermal newbie and especially so if you are hunting virgin ground. The biggest thing is your depth perception really gets weird when you start out, hell there was times starting out where i thought i saw a coyote way off in the distance only to realize it was a field mouse at 50 yards. I did purchase a LRF scanner but honestly, I don't even use the LRF function anymore, sometimes on new dirt before we start calling i will range a few spots just to get a baseline or will use the line distance tool on onX to measure a fence line, cattails, or a small group or trees or something but after spending a bunch of time hunting with thermal I can tell if it's in range just based of size of the dog through main & PIP screen. But I'm also one of them guys who don't like messing around with my scope, I don't record any hunts and usually when i get to a stand I just verify both my focus knobs are good and then don't touch it unless I'm shooting which is the reason i went with a LRF scanner instead of a LRF scope. I shoot a fairly flat round in the 224 Valkyrie using 60 grain vmax or ballistic tips and my base scope mag is 2.9 and I always have PIP turned on so i will use the PIP if its a longer shot.
@Hawkeye54 hope this helps in your decision making