Untill I sort some wiring out, I'll not mention the Miracle Man yet: doesn't seem fair.
The Nailbomb isn't as high output as the EMG 85, but has a much clearer, less fizzy sound to it. Better note definition and doesn't distort as much (so has a much "cleaner" clean sound to it for the same gain settings). The 85 is bassier too I find, which is why I moved it from the neck to the bridge. Might just be my imagination, but the Nailbomb doesn't seem to get as ice-picky when the treble/presence is cracked a bit.
The EMGs are in a basswood Cort X-11. I tried the 81 in the bridge too, but it seemed a bit thin and harsh sounding, so it's in the neck now where it handles the lows better than the 85 did. I had noth BKP sets in there at one time too, but the actually weren't as good in this guitar, which is why I'm suspisious of the pots in my Epihpone - they came from the Cort when I swapped the EMGs over.
Also, thanks Mr Air. Much appreciated! :)