Advice on MIG purchase

[Solid LT1]

I once owned a Miller 200 MIG welder but sold it to a freind when he opened his shop thinking I could downsize to a smaller footprint welder like the Hobart 220V 175amp Handler unit. I'm selling my Hobart I've never been happy with its performance and the drive system is pretty light duty. I need advice on some of the current offerings on the market.....Miller "auto set" series welders, current model 220V Hobart or Lincon products set up for spool gun use. I have specific needs for spool gun capability ( welding aluminum bumpers for off road vehicles.) Please those of you who have MIG welders with spool guns give me some feedback on what you like/hate about your machines. I don't need a TIG....already have a Dynasty 300 amp machine just need MIG platform feedback. Thanks for your help.