I was on halos all last season, and I'm on domains this season. I like both skis a lot, and I think either one is a great choice. The halos are stiffer and a bit lighter, the domains are softer and maybe a touch heavier.
Personally the domains have been my favourite ski in a while. I love buttering, pressing, surface swaps etc. so they're perfect for all that stuff. Of course the halos are great for this too, it will come down to personal preference on this one.. How much time you spend in the park, and what you like to do in the park.