Your not asking for much, are you?
How is one companies product better than another companies product? Well, for the money, each company will be fairly similar. What you are paying for is the speed that the compressor works, the technology in that compressor, the wiring/hoses/development in that compressor .. will the 400c do the job for you? Maybe. Will it be too much? Never.
Have you thought about the JunkYard
compressor? Cheap to setup and it does a fairly good job. For my tires, about 15 min per tire from flat without a tank in the middle.
In the ricer magazines they talk about 'baggin' a vehicle, well they use air tanks and compressors to lift and lower their vehicles .. there is some good tech in those about it that can be "setup" for 4-wheeling as well
Re-read original message .. made changes