Neither a bad choice.
Frankly, I wouldn’t dismiss the 6PPC for hunting deer and smaller game. While the PPC is a bit slower, it’s not so dissimilar from the 243LBC I built last year (6.5 grendel necked down to 6), and I can’t think of anything to fault about a 100-108grn bullet at 2800-2900fps for whitetail hunting. Naturally, many PPC’s were and are built with a slower twist than the long, heavy 100+ pills would want, but they don’t have to be. I built the 243 LBC rifle with PRS competition practice and hunting in mind - as I adore the idea of a 105 at 2850fps using under 30grn of powder for deer.
A very, very similar cartridge is also coming to market soon - semipublic at this point. Hornady is releasing a 6mm ARC, I believe I have posted about it here, recently. It’s a shortened 6.5 Grendel case with the shoulder pushed back, I’d expect exceptionally similar internal capacity and performance to the 6 PPC.
Better barrel life than 6 creed, for sure.