I got a couple of Butler Creek 25s from Wholesale Sports in Edmonton. The problem with these other than not being able to be disassembled is that on some rifles, they have feeding problem. My friends has a Stainless Synthetic 10/22 a few years old and the mags work fine. On my brand new blued synthetic, the mags would not chamber rounds. I googled the problem and there was a PDF with various problems for different mags. Turns out I had to file down the back edge of the metal on the mag. Works fine now. I suppose that with all the different versions and model years of the 10/22 and all the different aftermarket mags, it is kind of hit and miss.
The way I look at it, is the 10/22 is a cheap way for a big kid to have fun. The 10/22 and its accessories aren't high quality , so you will eventually come into problems. You need a little bit of luck to see what works for you, but as long as you are having fun with it, keep on going.