The more/bigger compressor you end up with, the more bigger air tools you will end up buying........
My first compressor was a little Sears unit on wheels, served the purpose, till I ended up with more air tools than electric tools..Bought my compressor from a shop, it had been taken apart for a re-build, why, I have no idea, it needed nothing, bought everything in a box for $150.00, spent another $55.00 on a rebuild kit and about 125 bucks for a 5hp electric motor......
I plumbed my shop with 1 1/2inch plastic pipe, with 6 outlets, three of the six have 50 feet of air hose on them, two are capped for possible future use and one line goes directly to my bead blast cabinet (something everyone with a big compressor should have
)....regular old PVC water line will work, it's rated for 300 psi and my compressor is set on 160 psi, I think...
I would highly recommend plumbing a shop with a number of outlets, makes working so much easeir and it's not hard to do...........
David