I am now an owner of my 3rd SW autoloader, this one much older than my M&P ones. Paid $500 a used 3913 that had been sitting in the used gun case for months. I always looked at it and thought about. Ive seen mention on THR much love for these 80s and 90s metal frame SW autoloaders. It's a great shooter and with my shaky hands I must have put a handful of rounds thru the same hole at 5 yards. I do need to get extra mags for it. I've only come across an OEM on eBay and it was going for $70, the rest were ProMAG and Triple K. Any opinions on the aftermarket ones?