I also have the Fugi Q4 Pro system, and it gives me excellent results every time even with my modest experience with HVLP.
If you are patient, you could keep an eye on ebay like I did. I got my Q4 for less than a third than a new unit, with extras. BUT, when it arrived it had not been cleaned out properly from its last use... a white latex enamel that the cabinet shop used. It took a couple of hours of patient cleaning to remove all the paint, but I think it was still worth it.