I am forced to shoot Magtech ammo at the range I frequent as they do not allow one to bring in their own ammo. I find Magtech to be OK as it causes no problems with any of my guns but I do find it very dirty. I am very meticulous about cleaning after range use and it takes me longer and I use more cleaning products after shooting Magtech.
When offered a choice, I find S & B to be reliable and not as dirty, and supplies have been plentiful.
May the Schwartz Be With You.