Hi Derek, 

Thanks for your question.

The 50.12 and 56.14 offer the same bounce and full sole F grind in the SM5's as they did in the SM4's. The SM5's feature the new TX3 grooves and different finishes.  If you like your current 50 and 56, I would suggest the same lofts and bounces in the SM5's.

As for the "60.12", we only offered up to a 60.10 in the SM4. If you have a 60.10, I would suggest getting the 60.08 M. The 60.08 M in the SM5 has the same M grind as the 60.10 SM4 with similar bounce.

Hope this helps, 

Bubba