Yess! I see the SP fits and looks better -so keep! I love and use blacks very much but think for us fair blondes it is hard to find the right leather jacket in this color(subtle shine like here helps a lot!).
If between sizes and in doubt I always bet for sizing up- but not so for the statement deep black hard edge clothing item like here (or a denim jacket for ex) where I end up looking and feeling better usually in the smaller size.