Assuming you mean David, I agree he is very underrated. Most? I guess it depends. I’ve always thought Bob Weir was one of the most underrated for having to play between Jerry and Phil, but that’s just me.
FYI Fishface, about 8 or 9 years ago I had the chance to meet Storm Thorgerson (the artist who made the Houses of the Holy cover that is your sig, along with dozens of other iconic covers). Really nice, humble guy considering his career. He was showing his works in London. I desperately wanted to pony up the $ for the Houses artist proof, but it was a bit much for a student. Anyhow, if you don’t know his work, it’s worth looking into.