I too like the first one better with a little bit of EQ on the play back side... I vote for keep it like it is. t+
My .02 is that 99% of the time leave the recording as is and let people adjust it to the way they like it as they listen. Even if you eq it or run a notch filter listeners will probably end up adjusting it anyway. I'd rather have the exact source and adjust it the way I want it in play back.
I know another taper that took a road trip for these shows from Phoenix. I've only heard a sample from one night so far but it seems pretty similar to the untouched version to my ears.