The model 15 all day long. It will be a purchase you will never regret and $530 OTD for a pristine M15 is an OK deal by my standards. You didn't mention whether it came complete with a box and papers but I just sold one in that category for $600 and the buyer was very pleased after he received it. Either way anything around that price if it is indeed in the 95% grade is a winner. The photos show what a lot of folks train with starting with a must have model 18, not just another masterpiece. The snub nose is just one of my favorites and perhaps one of the most accurate 2" barrels you will ever find,