I've shot both the Kel-tec P-11 and PT-111 and prefer the P-11. I have a P-11.
The main advantage of the P-11 is that you can go to the Kel-Tec Owners Group website and learn darned near anything you need to know to keep the gun shooting. You can do your own gunsmithing, in effect.
And its cheaper.
On the other hand, I picked up a Star Firestar + the other day for a disgustingly low price, in near new condition. (I paid $129 at a pawn shop, but see them in NIB or ANIB for around $250 in this area.)
The STAR guns, while never particularly popular, are very well made guns, and typically very accurate. Most (if not all) are single-action only, but that simply means you carry cocked and locked.
The Firestar Plus is about the same size as the P-11/PT-111 (its really a bit larger, and a bit heavier, but not THAT much different). It has a 10-round capacity (13, if you want to buy an expensive mag), and is far, far easier to shoot well than either of the other two.
I think my Kel-Tec will kinda get pushed to the back of the gun safe, now.
[This message has been edited by Walt Sherrill (edited May 04, 2000).]