Zaino is the best out there IMO. I have tried a lot of waxes and this is the best by far. I did not believe it until I tried it. No swirl marks and durable finish. Takes a little time with the clay bar but worth it.
I am going to buy a 2013 ZL1 through my dealer as soon as the allocation is available and you can submit it. Not worried about keeping it clean as it will be driven in nice weather only.