You can never have too big of a compressor!
:>)
I have Snap-On die grinders - and I have everything in between - including Harbor Freight versions... I agree with you - they've gotten so cheap - you buy a couple and toss 'em when they go bad. While I prefer, by far, to buy American - it's hard to justify a Snap-On cut off tool when the junk versions work just as well.
Once you get a good compressor - then all your tools go air... drills - grinders - dimple dies... then you have to convert your engine hoist to air... and your tranny jack... Next thing you know - you're blowing the floor clean instead of using a broom...