I know this will in fact be over looked, but, one of my best investments was a little Beretta 21a Bobcat 22lr. It's hard to shoot, but it is accurate for what it is. After shooting a 100 rounds per session at first makes you appreciate your other handguns BIG TIME.
It's paid for it self in cost more than 3-4 times over so far. I hit 16 (paper plate) out of 32 (16 flyers) CM and not one miss at 25 yards. And 6 real flyers on target.
TBS, don't take my word for it!
PS: it doesn't like Rmingtons nor do I!