Soldato
Agreed, and I speak from experience having done 72k miles in an M135i LCI and now have an M3. The seats are lovely.The M4 / M4 CP seats are 100x better than the M2 or M2 LCI seats and like you've read... some of the best I've experienced in any car.
It is worth noting that the CP seats are different to the standard M seats though, and it's not only the holes in the back. The side bolsters come further forwards and are slightly "squarer" giving improved lateral support over the standard M seats (though those are still very good).