if ur runnin nitrogen only (w/o back up air) and run out... im sure that would be a con...
and u have to pay to refill nitrogen...
nitrogen is faster tho...
compressors for me right now, its free air, when I was single and had no kids it was nitrogen all the way! Nitrogen is a cleaner setup, no wires, pressure switch, tanks or compressors.
nitrogen is faster, not sure how much to get a bottle filled. if running nitrogen, i would still have a backup compressor. compressor takes time to fill but never runs out of air. for a daily driver, i would run a compressor or possibly nitrogen w/ a backup compressor depending on how much air you use.