Bruno2,
I've used Winchester, CCI, Remington, Federal, Magtech and Wolf SPP and all seem to do the same exact job. I used to shoot only CCI primers because they were always reliable for me over the years. About 2+ years ago the CCI primers were costing me a little more than Winchester so I switched to Winchester for my handgun ammo. I now use Winchester for all my handgun ammo and CCI for all my rifle ammo. This is probably out of pure habit rather than anything else. I did shoot 5000 Wolf primers 6 to 8 months back and they went bang every time. I didn't need to adjust any of my charges either.
IMO they are all good...