My review on EMG81-7 on my nec tru esp SC607..
i have another esp with emg81 (6 string).. the sounds really the same.. incredible sustain, armonics and frequencies response, due to the nec tru construction and emphasized by the strings-tru body and the bridge (les poul model).. low noise.
really really cool sound.. i tuned it B standard with blue steel .009\.046 and sounds great!
can i suggest you this 3 articles by Mr Tillman? =)
Response Effects of Guitar Pickup Position and Width Response Effects of Guitar Pickup Mixing Pickup Response Demonstration Applet
really interesting.. really.. i studied here elettroacustics for my laurea degree course.. really supremus!
ps: i really don't know if i posted by following the rules.. i hope so..