I have P01 Omegas, CZ75 Compacts and I had a couple of the CZ75 Compacts (steel frame) that were stamped CZ75 Compact but look like P01s.
I don't notice the beavertail on the Compacts.
I do, really, like the way the P01 feels in my hand. I think it's the grooves in the grip frame front and rear that my hand/fingers feel.
It may come down to the "look" you like. There is just something about the clean traditional lines of the CZ75 Compact (CZ75B, CZ75 Omega) without the rail. I like the way my CZ75 Compact looks. But I have a couple P01 Omegas with lights on them. I don't really carry them. I used to carry one or the other at times but I put lights on them for house use and no longer carry them.
Looks. Feels. Performance. How you intend to use it.
They use the same magazines, the same ammo, many of the same aftermarket/upgrade parts.