as i am the owner of the sata nr2000 and the iwata i can say that i like both guns but i use the iwata strictly for the clear, it just seems to spray the clear a little nicer the sata is strictly color, mostly basecoat. to each his own i guess!!
if your looking for an hvlp that doesn't use alot of air and is name brand try a walcom slim s. uses 6.6cfm. its actually designed to be a primer gun, although it shoots base and clear nice too. not like the sata or iwata but its nice and not killer expensive.