Drive both and decide. We can't make that decision for you unless there is expectation that we chip in on the monthly payments. Also, worth pointing out that you are asking an entire forum of people who essentially chose the M2 over the Camaro.
I considered the ZL1 and drove it but few things I liked and didn't like. Power was nice and handling seemed well for the short test drive. Downsides was the ridiculous visibility and subpar interior. In the end didn't really care for it all that much.
Also, drove the GT350 and that was a great car but the M2 just barely beat it in my mind. Might want to consider that as well. Good luck.