Yes, parallax could be an issue. I like K4s, and K6s. Great hunting scopes, makes you focus on the animal instead of playing with the scope. And yes I believe that you get what you pay for. I have a few Leupolds, Nikons, and Burris scopes. But, most 22 rimfires do not generate the recoil that tears apart a scope. A 10-22 or other semi-auto needs more scope than a bolt to withstand the 2 directional recoil, but not a $1000 scope. I use upper level Simmons and Bushnells on most of my 22s. And those can be had with an adjustable objective for a reasonable price.