I am thinking about trying a few events in 2014, probably USPSA, and will likely shoot my Springfield Range Officer in .45, which I just picked up and am mag shopping for. What magazines would you recommend for an otherwise stock gun? It came w/ 7 rounders - should I do 7, 8 or 10? Is there a class difference for 7 vs 8? Looking at CMC Power Mags or Power Mag + unless you can sway me towards something better for the money (Wilson? Kimber Pro? _______?)