I picked up a Argus 2-10x40mm for a little Weatherby Vanguard .223 that I wanted to try out as a coyote calling gun. The scope is very nice, it is a clearer scope than my Vortex Viper 6.5x20's. Adjustments were spot on. I went calling on a ranch in CO, called in a triple in the heavy brush, I was only able to get one shot off but killed a nice large male at 30 yards. The large FOV on 2x worked perfect in the thick stull. After the coyote we headed up to the ranch house and there were a few PD's out in the pasture so I cranked it up to 10x, got down on my shooting sticks a proceeded to pot a couple PD's out around 200 yards.
My grandson like it enough to purchase a 3-15x40mm for his AR. At christmas I got to shoot it and it is just as nice at 15x eye position is a little crittical but not any worse than my Vortex at 20x. It does not have paralax adjustments but it didn't seem to be a proble but I only shot it to 200 yards and it is on a hunting rig so will only ever get on a high enough power for it to be a problem, if at all shooting longer range PD's for coyote I doubt it will ever get over 10x in the field
Of the two I do like the 2-10 more, it fits my hunting style as most of my coyote calling rifles wear 1-4 or 1.5-6 scopes on thm and my open country coyote rifle has a 2.5-10x40mm Elite 4200 on it.
Cons.
For me and the way I hunt the turrets are a little to tall and being short I use a youth length stock and the scope has a lot of eye relief so I had a little difficulty mounting it fare enough forward. See Link to picture of it mounted.
https://imageshack.com/a/img922/9118/KNtfL6.jpgI paid $129 for it from Camaraland, it is a heck of a scope for the money.