the difference is in the VENUE. furthur is playing larger, outdoor style venues, while ratdog usually played clubs/ indoor venues that had good acoustics, usually. its just easier to get a clean recording indoors, than it is outdoors, evne soundboards.
i used oto collect dead bootlegs back in the day of tapes, and some had really loud crowd noise, sometime if i fukd with the sound levels i could make out whole conversations. i thought of seperating and making a recording of just GD crowd banter, but i dont that much time on my hands yet. though i do poop and post.. and im drifftin and dreamin, and if i got a grrl we are usuallly fukin or fightin. but such is life.