I disagree with "The Fillmore Concerts" being a great disc. And I say that because you can barely hear Berry Oakley's bass in the mix. As a person, who saw the "orginal" Allman Brothers on three different occasions, with the last being a show in a similar size theater in Fayetteville, NC the Saturday before they recorded at the Fillmore East, I can tell you for a fact, his bass and the bottom that he provided was an intregal part of the Allman Brothers sound. and for some reason that got mixed way to low on the "The Fillmore Concerts", other than that it was a good recording.
btw Mechans, Tow Dowd was the producer on both the orginal "Live at the Fillmore East" and "The Fillmore Concerts".
Also, since Tom Dowd's name as got mentioned, I would highly recommend the DVD "Tom Dowd & the Language of Music". It's facinating and entertaining documentary, and Tom Dowd really did know how to capture "lighting in a bottle".