I bought a ViAir 400P and put together an air hose contraption that lets you fill all four tires at the same time, (copied the idea from another thread). I need to air down for some soft sand driving on Padre Island to go fishing.
The air contraption has quick connects throughout, (even going to the air stem valves of each tire), making it a quick process. I have a gauge attached so I can measure air as I let it out and pump it back in.
Releasing the air took about a minute to go from 35psi to 13psi and filling back up to 35 psi took the compressor 22 minutes to get all four tires filled. I was impressed at the ease of use and the quiet pump.
I was very pleased with the results and am looking forward to our fall surf fishing season.