I personally wound not recommend Blazer in your situation
You stated in your other post that you plan on shooting your gun only enough to know it works 100%.
Blazer ammo was/is designed for people that do a lot of shooting but do not reload their own ammo. Some people like it!.
Years ago I purchased a couple of boxes of Blazer 9mm Luger and was shooting them out of a Smith & Wesson model 39.
The metal that they used did not crimp the bullet in tight at all!, when I would shoot them, the bullet was crimped so loose that it would push back into the case and cause jams!, I could take one of the bullets and pull it apart with my bare hands!. They may have improved their standards since then, but I still would never bet my life on their ammo. I never used UMC in my Kel-Tec, but have used it in a lot of other guns and never had any problems, it looks to be cheaper at wal-mart in my area then it is at other stores.