I finally gave up on that noisy old craftsman compressor and got an Campbell Hausfeld 60 Gal 6.5HP 240v upright. I hard wired the garage with lines of pex as well. This is the pex pipe I used.
You might want to think about O2 barrier pex otherwise pex-al-pex. I’ve got a viewer who says I’ll die cause I didn’t use it. We’ll see. :)
If you want to do it right you should use this stuff.
Subscribe and watch the whole video series to see how it did it! – http://goo.gl/z5P38R