I opted for Viair because of the topping off of my G614 tires (110psi). Many of the compressors out there only get to 100. I went with the Dual444C (
link) setup and mounted it to a plate that is mounted to the truck. If I want to remove it from the truck, I disconnect power and one air line, then remove the plate. The whole system remains attached to the plate.
I gotta say that it has saved me at least three times so far. I had a leaky valve stem on one tire. I always make sure my tires are inflated before any trip and use TPMS to make sure they are good through the trip. It does suck when you are ready to leave and find that one tire is flat after just a few days. Good luck finding anyone around with a portable compressor that can get you to 100+psi.
I opted for the larger (200psi, 3.53CFM) compressors with a tank because I will be adding an air horn to the truck. I also like the idea that I can use the air hose to blow dry the truck after a car wash, or blow out the dirt after hauling stuff. A compressor can be used for much more than just filling tires!