Paint Gun Recommendations for a semi-pro

Honestly I don't have much experience with the w400 but as far as I can tell not much difference at all. W400 they say is popular with mural guys so maybe it was a different adjustment as far as pattern width is concerned. Stay with the lph400 and you'll be dialed. Amazon has some decent prices along with autobody tool mart. That's where I order all my chit. Great prices on longboard rolls.