The 2013 M5 wheel is different from the 2014 M5 wheel. In 2014, the M5 got the same one as in the M6.I would rather have the M6 steering wheel personally. The M5 wheel isn't anything special, but the M6 wheel is really sharp.
1.5G for a steering wheel from F10? I'd much rather pay 1.2G and get a custom made CF one.