For Phish, kinda depends. They only have one studio album I enjoy, The Siket Disc, which is a weirder, almost ambient album. The real thing to listen to with them is a live recording. They have a series of official live releases, of which Phish 4 is probably the most entertaining. Phish 15 has their Halloween take on Remain in Light though, and the rest of the show is really good as well.