I'm thinking of replacing my metric deep set with an SK spline set. I see these sets for a decent price on ebay. My current deep set (which I don't use much) was made in Taiwan that I got from JC Whitney in the late 80's. I'm missing several and thought to just get a new set. I don't see much in the way of spline/square/12 point bolts, but I thought it would be nice to have for rounded bolts that I do see. I realize that SK doesn't make them anymore and I wouldn't be able to get replacements, but I'm not a professional mechanic. I'd consider the craftsman spline for less money, but they don't have the 15mm which I use a lot of. Any reason not to get sk's?