Even with my crappy speakers, I can definitely tell the difference between more recent ones (2011 and 2012) and the ones from the early 2000's. However, rumour has it the 2011/2012 boots even sound better than the 2009/10 shows - which still sound great to me.
I am impressed that they continue to strive to improve the sound on these things.
I agree..I wish DMB did this..they release a ton of live shows...their Live Trax series is up to #28 now..and they have 13 in store live releases as well. Plus a DMBLive series from very early gigs and Wharehouse live cds for club members...........still it doesnt touch the amount of shows PJ have released....72 just from 2000 alone and I think it was also 72 in 2003....amazing.
Radiohead haven't released anything live on cd....yes we have great boots from the BBC etc...and the 8 song I Might Be Wrong.....they are as tight as U2 when it comes to releasing live material on disc.