This probably is NOT going to be a popular statement here, but I'd take a GT500 over a C8 any day of the week and twice on Sundays.
The front engine rear drive just suits my driving style better. I have no issue with the dynamics of a Front engine/rear drive car. I'm fine with the rear end stepping out and the car being "skittish" at the ragged edge. I know how to handle it, what to do with it and understand exactly what the car is trying to tell me at that edge.
Rear/mid engine cars?
Nope.
I've never been able to get comfortable with the way they handle. I just don't find them predictable or telegraphing that "Hey plucky, you better back off! I'm about to loose traction and fire us off into the weeds" like a FE/RWD car. With a FE car, the back end will step out and I'll get that rear end drift. But I also don't have to lift when that rear end steps out because I know what it's going to do. So end while I'm in a rear end drift, I can still accelerate because I'm used to a good "wrestle" with that oversteer condition.Yes, it takes more concentration and skill, but it's always just worked for me. Fits my style I guess.
Without exception, every rear engine Porsche or mid engine exotic I've been given at the track for a run gets away from me (sooner or later) and next thing you know there's grass flying through the air (and I've done the full "silverstone experience", so I've driven some serious exotics and had some serious instruction). In all fairness, I'm usually going just as fast (or faster) than I would be on a FE/RWD car, but there's just not as much "communication" before it lets go and that means I can't take it right to the ragged edge because the car just doesn't talk to me. I have to back off because I never know when that absolute "stickiness" is going to swap from a light 4 wheel drift to a full on 4 wheel slide into the closest bushes. It's like I only speak English and rear/mid engine cars are speaking French.
Comparing the GT500 to the C8 isn't really a fair comparison, but I'm surprised the GT500 represented as well as it did against the newest vette with all GM engineering "magic".
Now, those are all track comments, where you actually can touch the limits of hypercars like these.
On the street?
Meh, pick whichever one speaks to you the most and then go drive the wheels off it. Unless you plan to track it on a serious level, all those ultimate performance numbers are only good for sitting at the coffee shop and bench racing....