I'd keep the 10/22. Easy to work on, nothing isn't fixable, if it needs any attention at all. More stuff is available for it than any other rimfire rifle. My DSP ain't going anywhere, despite having a raft of nice .22s. Then again, my CZ 452 isn't going anywhere either.

If I were stuck with just one, it would probably be the CZ, because it's so danged nice, but I have seven pretty good .22s, and don't plan on getting rid of any of them.

You can roll a turd in peanuts, dip it in chocolate, and it still ain't no damn Baby Ruth.