Re: +Mids .vs. Scooped mids?
It also depends on what music you're playing. I never got the whole scooped-mids thing either, but different people define mids differently (as odd as that sounds).
For some, it's cutting the 1KHz only. For others, it's the Smiley Face graphic EQ. For someone else, it's cutting only the freq on either side of 1KHz, and still others will cut the 5 bands that make up the majority of the mids.
Others still merely grab the Mid knob on the amp's parametric and drop it to 0.
As well, there's two different settings - Rhythm and Lead. You dont want scooped mids for solos, you want to be heard. Rhythm shouldn't tromp on the solo, and the solo shouldn't be buried with the rhythm where you only hear the double-stop bends and meedly meedly on the ighest frets/strings. The toggle switch on your guitar can't do everything for all types of music. It does for most, but not all.
Play around with the settings and find what works for you, not Metallica.