I'd probably say in Mike's case where he probably isn't polishing and waxing all the time, to go for the more durable one.
Ease of use is hard to beat otherwise i'd say go for AG HD or Z2 as they are more durable but not quite as easy to use.
I'm just lead to believe by PB that for durability acrylic is a little better, the reason being is it's based on Carlack's products so the Carnauba one is more for looks on flat colours.
Either or is fine and once you get layering it'll probably be fine, peace of mind I usually suggest acrylic.