Macpac and coleman tend to serve different ends of the market. Coleman tend to be aimed at the cheaper end (hence the tent is on the heavish side) and more aimed at car campers (although they do a few tents you can backpack in).
Macpac tend to be higher spec and higher priced. Although the celeste isn't geodesic it will probably stand up to a fair amount of abuse as the new zealand climate is pretty harsh.
A well made and well designed non-geodesic tent can often perform as well or better than a cheap geodesic-look at all the people using hilleberg tunnels. It also makes them lightweight.
My tent (saunders) flaps a lot in the wind which means earplugs and a bit of faith are necessary, but it stays put. I'd only use a full geodesic if I was going to camp somewhere crazy-and then I'd probably want something wind tunnel tested like the force ten tents.
Don't get me wrong, nothing wrong with coleman, but if the tents are the same price and you want to backpack with it, I'd go for the Macpac.