I just purchased a Systema Colt and plan on buying 3 new mags for now.I know I have to pay for quality but I am wondering about the Metalform ,Chip McCormick and Wilsons.I will primarily be shooting ball ammo for practice but I will be carrying this gun for defense with HP's.I looking for feed reliability in a 7-8 round mag that sits flush with the handle.Has anyone had good/bad experiences with these brands?