Ok thermal guys, I’ve got it narrowed (I think) to these three:
Pulsar Thermion 2 XP50
ATN Thor 4 HD 2-25x640x480
AGM Rattler TS35 640

Now the AGM is sorta last on my list, but wanting to here feed backs if anyone owns one these mentioned. I have a hookup on the ATN as well and possibly one on the Thermion.

I have that ATN on your list. No complaints but I haven’t been around the others.

What is your primary use? My buddy had a pulsar thermion 50 before he went to Halo (whole other level). I have a ATN THOR 1-10, 640x480. The pulsar head and shoulders above my thermal - but cant speak for the ATN you referenced. But, when I bought mine for $3500, the pulsar was $7000. They have come down in price.

I strictly shoot hogs with mine, on a .450 Bushmaster which has a range of about 150 yrds - same as the scope. If I was going to do a lot of coyote hunting, I would want more range and more scope than what I have. That said, I have killed hundreds of hogs with that setup.

I would go with the Pulsar. I recently got a Pulsar Thermion xq35 and really like it. I've had a Pulsar Apex xq50 for 3 years and it has been great. I have a ATN 1x4 for my first thermal and it work but the Pulsar's are the same resolution. The Pulsars are better in every way than the ATN that I have,

Pulsar without a doubt out of all three, but you need to get eyes behind one before you buy.

What are you hunting and at what distances? The base zoom is really what matters when it comes to thermals. I have several other scopes I'd recommend before a couple of those. ATN's are terrible in humidity, my brother had that exact ATN and I had the 2x8, we both have switched to infiray (iRayUSA) and never looked back. I've owned agm monoculars and AGM is good brand, the Rattler series is kinda outdated though. Also, you need to ask yourself if you need an LRF

If you follow the fanboy pages for awhile you'll notice that Pulsar has less complaints/issues than all the other brands and it is not made in China. Those two reasons are why I bought Pulsar. Also Pulsar has the highest recoil rating of all thermals. If you may put it on something bigger than 308 there isn't another option.

The PRO version of the Thermion 2 is reported to have twice the battery run time of the original Thermions with the same batteries. The Thermion XP50 has a 2x base mag, good FOV and great resolution. My experience with Pulsar has been really good. I have not had any issue killing coyotes in pea soup fog.

I use the AN/PAS 13B made by Raytheon. It allows me to ding coyotes out to as far as a .223 will accurately hit them in the dark of night, never been disappointed. I have no experience with the scopes you listed but I can't imagine better performance. They are on the spendy side is the biggest drawback.

ATN is horrible. I had nothing but problems out of the 3 I had. Pulsar is my choice.

Just looked that one up and it’s the least expensive of them all and heaviest.

https://nvincorporated.com/product/raytheon-an-pas-13b/

That 3.3x to 10x optical zoom would be pretty cool for some applications. A 300mm objective lens is huge.
@wy.wolfer What do you have that mounted on? What does that weigh?

Thermion 2 LRF. You just gotta have the rangefinder!!

Pulsar is what we have. Got them from the Jager Pro guys in Columbus. Nothing bad to say about them good scope I’ll have another one on my next rifle

Look again. At new ones, not used or an old website.

This is setup on an AR platform, it's the new Raytheon model used by Army Special forces. There are knock offs out there.

The Pulsar Thermion 2 XP50 is a very good thermal, that would be my choice.