My harbor frieght job does pretty good. I had trouble at first with keeping discs in place, and found that flipping the outside nut upside down while making sure the disc is in place on the back nut worked out pretty well.

 

metabo for sure, or even their mother company, walter.

very well balanced. try holding a dewalt in your hand with the disc spinning and turn your wrist.
the metabo will feel so much nicer when doing this. perfectly balanced, so if you're using it in a fab shop, it won't kill your wrist using it all day.

i even use metabo cut off saws too. quality...