I recently bought a used Mark IV model 70 Colt .45 and was really impressed with the way it shot. First mag full ended up with two clover leaves seperated by a single hole with a spread of maybe 1.5". Ok this was at seven yards but still impressive, especially since it was the very first time I shot it. Not so impressive was the Colt factory mag that cause the last round, on several occasions, to stove pipe. So, I need to obtain some 1911 mags and was wondering what everyone thought were the best out there.