There is no perfect rifle.
Interesting history on the Austen vs Owen. My friend had C&R NFA versions (original and not "kit built"). The Owen still had the splotchy camo paint on it. He thought it was one of his best SMGs...and he had original Colt Thompsons, USGI TSMGs, original HK MP5s, MP40, Beretta 38, original Uzi, original M3 Grease Gun, S&W 76, original Stens, MACs, original Madsens, etx etx