heh dats y not many ppl like EMGs cos of the battery issue. but i dunno abt the tone wise. cos i find 81s got dis nice crunch wif dist, but the cleans sounded kinda thin.
anyway if u wanna booster for solos u can try using a EQ. its useful for sustaining. or maybe u can try using overdrive (ibanez tube screamer or maxon OD), like kirk hammett, killswitch engage, zakk wlyde.