I bought a Bushnell Sportview 3-12X , 40mm lens, adj. objective. It had a retail price of about $90 but I found it on sale for $60. It does not focus at close range. It's acceptable for 25 yard shooting but the crosshairs fade out at 50 feet. THere is a huge parallax error of about 3" (at any and all distances) that is not at all treated by turning the A.O. front lens. Now at 100 yards, a 3" error is not that big of a deal, considering this is just a factory gun with a cheap barrel and hard trigger, and it's lucky to keep a 5" group at 100 yards anyway. But at 50 feet, that parallax error is something to watch out for. You can still shoot tight groups, but you have to keep your eyeball in the same position behind the scope for every shot.
The best scope I have on any .22 is a 20-year old Bushnell, fixed 4X, 30mm lens, and it sold for $25 at Wal-Mart. It has only a slight parallax error, it focuses at any distance I'd ever use it at, it's bright enough for indoor ranges and shooting in the woods on cloudy days.
I much prefer the simplicity and ruggedness of a fixed 4x scope. I don't need any more magnification than that for shooting minute-of angle. And until I get a better gun and a benchrest, I don't need to worry about hitting an aspirin tablet at 50 yards. I shoot golf balls at that distance, though.