The same question was asked on another forum.
My experience with the PT-111 and the Kel-Tec P-11 is similar. (I have a P-11 and its a good gun.)
Those who buy the PT-111 or the P-11 because its a full-capacity 9mm for a lower price, but who have little experience with handguns generally hate them. They are hard to shoot well, but can be mastered.
Those who have shot a lot, and have reasonable expectations about what these guns can do -- primarily designed for up close and personal self-defense -- generally have a good experience.
My preference is the P-11, but only becuase there is a very active user's group who can help you really refine the gun. (Check out
WWW.KTOG.ORG)
All this said, I've quit carrying my P-11 and now carry a Star Firestar Plus. About the same size as the other two guns, a little heavier, same capacity, and far, far easier to shoot well. Nicer fit and finish, and still available new for around $250.
(I shot my P-11 in an IDPA match a few months back and did poorly, even though I shoot it a lot. I shot me Firestar Plus in our last local match [a small one, to be sure] and won by a substantial margin.
If you can't find a Firestar Plus, then either one will do. (grinning and ducking.)