Re: what do you mean when you say EMG's are sterile???
If EMG made real 7-string pickups I'd consider them, but alas they seem to miss the whole point.
As far as EMG-81s go, anytime I've played a guitar with them (LTD MH100FM, Jackson Kelly, Ibanez 7-string) they just sounded plain and ordinary, and definetely not quiet...a very nasty buzz to them, quiet, but definetely apparent.
They didn't have the searing high sounds that I'm used to out of passives, it just sounded predictable and boring imo.