Yukonstorm;
I bought a stainless 21a a few years ago for a steal of a deal. I intended to use it as an on-duty backup to my Glock.
In the process of 'working it out' to find the best ammo, check for reliability, etc. I did find that stingers worked best in my pistol. However, while I never had a failure to fire for any reason with stingers, the lack of an extractor in the beretta 21a bothered me. The 21a relies on chamber pressure to kick the case out, and while it works great, you have no ability to eject a cartridge that failed to fire or case that failed to extract. This made me nervous, so much that I bought a S&W 642. Now I also have a kel-tec P11 and P3AT. Also, the grip of the 21a is pretty thick, for what it is, although that makes it more comfortable to shoot.
I like the 21a, I just felt there were better options. For a carry pistol in a reasonably low threat area, they would work fine.
Good luck.
-John