I just recently replaced both SM (52.08 and 58.08) wedges with SM4's (52.08 and 58.12). I have now realized that I should have stayed with the 8 degree bounce on my 58. looking at the new SM5's compared to the old SM's it looks like the SM's have more heel relief. My course has become firmer and I think I have too much bounce on my 58. Should I go with the S of M grind? I think I am leaning towards the M but something in my gut says S.