Since opinions are like (well you know) and we all have one, here's mine...
Absolutely LOVE the Gen 5's and had a Bad Ass Procharged 10 2SS/RS the last few years. I wanted to go from a A6 to a M6 and finally decided to do it. I also decided I would not be buying a Gen 6 based purely on the looks. Different Strokes for Different Folks and I prefer the looks of a Gen 5 over the Gen 6 so I bought a 12 ZL1 M6. Best Auto move I ever made in my life
I did also look at the Hellcat Challengers and very much like them, but I'm not paying 80K for a new weekend fun car nor 50K+ for a used one. So instead I bought a big HP ZL1 that can keep up or kick both their asses (for dam near half the price of a used Hellcat).
"SO FOR ME" (a Gen 5 Camaro & Chevy Lover), I would rather switch to a Challenger or buy another Gen 5 over buying a Gen 6 Camaro (again that is based solely on the looks and it's simply "my opinion"). SO.... if I was a New Car Buyer I can easily see why someone would choose the Challenger over the Gen 6 Camaro. Personally I dont like the look of the Gen 6 Stang so thats not a choice for me either way, although the technology and price is very temping.