I have a 10 year old Campbell Hausefeld $199 HVLP sprayer which basically works, but is noisy like a vacuum cleaner and the hose pops off the back of the blower unit since the air gets hot and the hose expands. I have been thinking about getting an upgraded one such as one of the Fuji or Fiji units in the Woodworker’s supply catalogue. What advantage would a “better” unit offer? Would there be a more even spray application? Quieter? More adjustable ? I spray mostly shellac, some waterborne finishes. No lacquer since no spray booth. Mostly I spray outdoors under my deck, on a drop cloth plastic sheet. Any advice appreciated.