An old 6.5 to 20 44 mag simmons will stand up to most recoil. I know a lot of shooters who used them on spring piston air rifles, without any problem. They are good scopes, and the a-for-mentioned white tail classic is good too. However, these are not a leo, burris, or B&L, so the choice is yours.
I just bought a Tru-Glo 8 to 32 X 44 from Natchez, for six five dollars. The scope seem well built, and the optics are quite clear. Have not really run it through all the hoops yet, but it seems pretty good. I have it mounted on a 22 rimfire, so recoil is not a problem.
My advice goes something like this: If you are buying the scope with the idea of taking a costly hunting trip, take the cheap junk off, and by the best. However, if you are just shooting paper or plinking with it then, if the scope fails you don't loose much just a day at the range... but, if you haul the gun accross the country, you will wish that you had spent a lot more.
Bottom line it depends on the use....
Jim