I was surprised to see the GT4 outdid the camaro on a lot of these. Based on dyno plots, would have expected the higher torque/hp (even accounting for weight) of the SS to destroy the GT4.
I did a few laps in a GT4 at Exotics Racing/Speed Vegas (highly recommend if you're in Vegas) among other high end sports cars, and it felt like the right amount of power for me. But not wanting to pay 100k+ for a storage-less coupe (only would really consider something like CT5-V Blackwing at that level), am looking at the Camaros. ZL1 honestly felt like too much (+increased weight/size), even though it looks like a beast. Was also looking at the new GR86, but I feel it might get boring too soon with the lower power capability, and I hear cabin noise is bad on the highway.