Definitely an upgrade over the X-Sight II, and not just in being 4K. Whole unit seems to be a lot better. On all of the digital units, an enhanced IR helps A LOT. I use laser based ones and they are phenomenal. Able to get out to 250+ with laser based. Generally the digital stuff kind of starts tapering off after 100yards, depending on moonlight and such. With a standard gen 2 unit, there's a definite step up from digital but it's not earth shattering. With the higher end gen 2HP units and a good illuminator, I can see 300-400 yards with it. With a laser based system, even further. In fact, I rarely sell regular Gen 3+ anymore. The Gen2+HPs are nearly as good as Gen3+ so, unless you're wanting to drop it on a 308 and need a Gen 4/Gen3+ Filmless (same thing), it's hard to justify the cost jump from Gen2+HP to Gen3+.
Owner of Texian Firearms:
Dealer in Firearms, Optics, Night Vision and other shooting accessories.
US importer/distributor of Rudolph Optics
Supporting bad financial decisions since 2015