I got a year of Sirius for free last month and have been about 80% GD channel. I never really paid much attention to Dead and Company, but some of those renditions rip. Bobby is old as fuck to the point of detriment, but John Mayer slings that long guitar dong in a very appropriate soulful, bluesy way.
pretty much how I found the dead 4 years ago was the free xm trial when I got my new truck. Probably 90% of what I listen to if not listening to pods.
I was never really into Mayer until he joined Dead and Co, which caused me to pay attention for the first time. Love his stuff now.