Welcome to a great forum from Southwest Florida. In the .22 dept., I’ve got a vintage S&W Model 41 that I normally shoot standard velocity CCI and occasionally high velocity in, a Ruger Mark II that digests just about anything I put through it, and a 1953 S&W 4” revolver that I also shoot anything .22 through. This would be a Model 18, but predates the named model numbers by about 4 years (1957), when S&W began the model number nomenclature.
The CCI is a good choice, in my opinion. Any brand of .22 is pretty dirty, so frequent cleaning and lube (sparingly) should keep it running well. I’m not familiar with the newer M&P .22’s, but a lot of members have them and like them, from what I see and read.
I think you’ll enjoy this forum. Everyone here is gentlemanly and polite, though we do get into spirited discussions on occasion. We are all very willing to help out, especially with newer shooters. After all, the more we promote and perpetuate our sport, the better it is for all.
Most of us are into older S&W firearms, especially from the ‘50s through the early ‘90s, when workmanship, quality, and materials meant something to the craftsmen who built the guns. That’s not to say that all of the newer stuff isn’t well made, just personal preference in many instances.
Enjoy and ask a lot of questions. We love to get people interested in everything Smith & Wesson.