I've just bought the megs g220 da. I was gonna use it with ultimate but seeing this, obviously not a great idea. Might get rid of the small ones though. Got swirl x too. Might still give it a go with the ultimate compound to help me better my technique. If it doesn't cut much, I can't do much harm. Saying that I won't be trying it on my car yet. Gonna do my sisters golf, dads Nissan patrol, mum 120d then my bro's m3 before I touch mine!