AR7's vs. K2 Domain's +k

Two very good skis that are quite different from each other.
The AR7s are very similar to the scratchs, they have almost the same medium flex and dimensions. They're your classic traditional park ski with camber. They're great for jumps and are great outside the park when cruising around groomers.
The Domains are softer and wider than the AR7s. They're symmetrical and have no camber; this will make them feel "surfy" when you ski around the mountain. This will also allow you to butter with ease as your edges won't catch when doing your manoeuvres. Same deal on rails, surface switch-ups and switch-ups in general will be a little easier to complete.

Both good skis that excel in their respective areas.
Basically if you want a more versatile and traditional ski, go with the AR7s
If you want something more jibbing oriented, go with the Domains.

Great advice from Bumblesteeze

If you want a ski that is good for any size jumps and going fast then get the AR7's - I love mine, great durability very pleased with them they're also good on rails and I have no problems with swaps and stuff on them.

If you want a ski that is good for rails, doing butters and small/medium jumps then go for the Domain's.

Also detune your edges, this will make your edge less likely to crack and come out if you hit rails/boxes.