My buddy had two of the exact same guitar (one black and one red). They were ESP LTD M200FM, and they both had EMGs (81 & 85). He put Blackouts in one of the guitars and we did a shootout. Same gauge and kind of strings and same tuning into the same amp. The only difference was the pickups.
It is like night and day. As sterile as the EMGs sounded, was as deep as the Blackouts were. The Blackouts were more like a passive pickup, while both had about the same output. In my opinion, The Blackouts were all the good characteristics of an active pickup with the tone of a passive.
The best part is the clips. If you have newer EMGs with the clips in the back of the pickup, you can just switch the pickup without re-wiring your guitar. The Blackout used the same exact clip as the EMG. All you have to do is take the EMG out, switch the pickup ring or pickguard, and plug the Blackouts in. The only difference is you use the clip from the EMGs backwards on the blackouts. You don't even have to solder to put the Blackouts in a guitar with EMGs! Try them!