Never tried the SFX/SF, but I have shot the SA numerous times and it is a fantastic pistol for the money, reliable, accurate and overall a very nice pistol, I can't imagine the other models would be any less. The main problem I see with them is lack of parts availability etc. Can I ask why the Canik? If it's just a personal preference and you love the look then it's a good choice for you, but honestly you are in the same price range as an M&P and the aftermarket support for the M&P is just vastly superior to the Canik, just my thoughts, why limit parts when you don't have to, especially with a first handgun. Believe me, it's pretty frustrating when you want/need something and can't get it