I would highly recommend AT innovations kit, Tony is a great guy to work with. I was originally looking at the Kraken but the price for shipping from canada alone and when I found out they bought his kit years ago and then made a knock off, well thats lame and not someone I want to support. The install was super siimple, I wired to my Aux 4 switch and bought the Bluetooth version. It seemed unnecessary but after using it for the last 7 days in Death Valley where I was airing up 2-4 times a day it was a game changer. The other jeeps I was with had Single compressors like the Thor or similar. I have two settings in my phone, one is "off road" which once all four lines are hooked up airs all four tires to 16psi, and another "on road" which airs them up to 34. Link below, his kits with the ARB twin is cheaper than buying it from somewhere else and Tony has top notch customer service.
innovativeatproducts.com