Re: EMG 81 set and SD JB/59 set
I had an EMG81/85 set, the Zakk Wylde set to be precise. I put it in my Ibanez RG for some crushing metal tunes. Well, the cleans do lack complexity you might find on the 59/JB, in other words, the cleans on the EMGs are "perfect cleans" if that makes any sense.
Now, where the EMGs really shine over the SDs are when you do high gain riffing. Palm mutes and pinch harmonics never sounded this good. And the sustain, awesome.
That said, I sold my EMGs. Why? Perhaps coz I'm just not a precise, accurate, perfect kinda guy. What's sitting snug in my Les Paul right now is exactly the 59/JB set. Couldn't be anymore happier with them. From Led Zep-ish tones all the way to AC/DC and even Zakk Wylde type stuff, at your finger tips, at the variation of your pick attack and tone control adjustment.
Hope this helps.