CZ for no other reason than they really fit me well and are great guns!!
Yep, might even shoot out of the back of the darn gun even. LOL

Actually, I am living proof that polygonal barres shoot cast lead just fine. I think it is just another BS story used by some manufactures and individuals to sway public opinion away from or towards specific manufacturers.
I have an all steel IWI Jericho in .40 (I think all the internals are built by Tanfoglio, maybe other parts as well,) with a polygonal barrel. I have only ever fired DRG cast lead bullets out of it, and I have put almost 3000 rounds through the gun, and the bore fowles less than conventionally rifled pistols that I own. I clean it but not often, and it is superbly accurate, always.
My buddy has an older Tanfoglio, and it handles all ammo well, another has a Sphinx (in Switzerland) which also has a connection with Tanfoglio; nice gun.
Glocks have a looser chamber with a quicker transition to the rifling, which is where lead builds up; this can cause an out of battery ignition; when coupled with the looser chamber and a large area of a shell being unsupported is the cause. Their barrels with conventional rifling might even be more prone to issues because cut rifling tends to be sharper, and causes more friction than polygonal rifling (evidenced by higher muzzle velocity for polygonal barrels, and the fact that they also last much longer.