I bought a refurbed BSA...$8 + shipping via ebay.
Been using it for 2 years with no issues...put it on my Neos a few months ago...
My only complaint is that it does have some pretty bad parallax--otherwise, it's pretty decent and gets good battery life.
I prefer the "tube" style red-dots vs. the holo type, simple because the "tube" style are more protected, and can be seen better in bright light.
BTW, I think the neos is a good choice...
If nothing else, simple because it is 100% dry-fire safe, while the 22A is not. No buffers or aluminum parts, either.