Another vote for the Simrad. For the money, they just work. Dark, bright, rain, snow, with or without an illuminator, close range or far, on a 22LR or a 20MM. As mentioned before, the gain and focus are very ergonomically located when compared to other comparable clip ons. I took a few coyotes around 300 yards last week and didn’t think twice about it. The last one I shot at 342 yards. After damn near an hour on set I had the slack taken up on one at 625 yards before it decided to cross the ditch for a better look. I practice (not often) on steel at that distance, and I could tell very clearly that it was a coyote and not a domestic dog. With Badger rings or a Spuhr Mount, you can put a simrad on anything with a scope. No NV bridge or rail required. Also, your IR Illuminator stays with the Simrad when you remove it so you don’t have to worry about mounting solutions for that either. Day rig to night rig in a few seconds. I clip mine on and off 5-10 times in a night with no issues.
@cake5150 ^^^ sold me a pretty bad ass unit. He’s got a good idea of what works and what doesn’t, along with quite a few others in this thread.