Vert, do you mean something like this:For $800 you can pick up a Ruger PC Carbine and a red dot. Load up on some 31 round ETS Glock mags at $20 each. Gun will run fine.
If I had to keep only one and the choice was between a conventional carbine in .223 or a PPC, I would choose the PCC. Just more opportunity to shoot the gun. If the zombies come to eat my brains I will deal with that later.