I don't shoot in competitions, except trying to see what loads or what pistols shoot the best groups for me.
My CZ 9MM pistols, whether plastic (P09) or aluminum frame/steel frame (CZ75 Compacts, P01s) shoot the smallest groups for me with 115 grain ammo.
I've not tried much 124 grain ammo. What little I have tried (Winchester 124 grain NATO and Remington 124 grain FMJ) did not do as well in the P01 as it does in the M&P 2.0 5". On the other hand, the 115 grain ammo that the CZs like doesn't shoot very well in the M&P.
I have not shot anything 147 I the CZ's (or the M&P) that isn't beaten badly by the lighter bullets. I've bought/shot Winchester 147 grain hollow points and FMJ in the P01 and it's a waste of money. I've shot reload lead, coated lead and plated 147's in the P09, the CZ75 Compacts and the P01 and I'm wasting my time/money. I haven't given up on them as I have too many 500 and 1000 bullet boxes of them to just give up. I've bought some Tite Group and AA#7 to develop loads (Tite Group isn't showing much promise so far).
Store bought 115 grain FMJ from Federal gives me excellent groups in the P09, the CZ75 Compacts and the P01. This is the Federal with brass cases. I've bought a box of the aluminum cased stuff to shoot some day when the snow is on the ground so I haven't gotten around to trying those yet. I've tried 115 grain FMJ Winchester and the groups are poor and the pistol is much dirtier afterwards. I've got some Remington 115 grain FMJ to try in the CZs as it didn't do well in the M&P either.
I have some 124's but just haven't gotten around to trying them yet.