Just my .02 worth. IMHO
If you own a M&P pistol in 9mm,40,45 then the little M&P22 is a must have to train with and keep cost of ammo down.
If you just want a 22 to plink with the M&P 22 is OK, however there are plenty other 22 pistols out there that are more accurate, however they are heavier and more expensive.
All in all the M&P is a great little gun and I like mine.
The handgun I plan to buy with tax money. Im new to firearms, back in June bought myself a 15-22 to learn with. The M&P .22 is next on my list. Baby steps