The Pard NV008P relies on a VCSEL to provide its night time performance through its tiny front lens to the 1080P sensor , I'm a big fan of its compact size and all in one design, they are very popular units , I like them myself, much better than the Sightmark offerings, the display is just unusable for me on the wraiths, which is a shame as the rest of them is pretty good, again these are very popular units, the wraith and NV008P both have identical FOV even though they have differing magnification... but neither of them are in any shape or form a Digex C50 , the difference in build, function and software are poles apart....
The ATN 4K's image is the best image I have seen for up close work, just look at the ratting footage on youtube produced from them... but they are hit and miss units whilst some love them others loathe them, the intent is there but they fail, for me anyway...
There is nothing on the market as polished "allround" as a C50 . Yes some might have a slightly better image here and there but look at the bigger picture of the product, it's premium the others are basically not in the same class in this respect...people might not want a well built functional product, if saving money is your game and you want the cheapest option..stick with a Pard NV007 or just make do with a lesser, cheaper dedicated option...,