i bought a hk mk23 back in the early 90's and its one of the handguns i truly regret selling. ive rented the fn 45 and wasnt terribly impressed especially since the one i rented had issues feeding hp ammo but ran fmj just fine.
im a fan of 45's whether its in a rifle or pistol from the 45acp to the 458LOTT and one of the hidden gems is the cz97bd. i had one then made the mistake of letting my dad shoot it now i dont have one
the cz97bd makes the hk mk23 look like your trying to group with buckshot when it comes to accuracy. recoil is almost completely absent. like the hk its a big heavy gun. my opinion, out of all the bigger than full size 45's out there the cz97bd is the best of them all.
there is also a cz97b... stay away from that gun like the plague it only feeds fmj without sending all the mags off to cz for modification. i really dont know why they dont fix that issue but they dont. the cz97b and cz97bd are almost the same but they are very subtly different