King Crimson recommendations?

Hi, I don't know anything about King Crimson & want to know what album people think is their best/or which one I might like most... just for reference: (I listen to everything but a few things that might help similar to prog??) Tony Levin (love him on Andy Summers CD) David Torn w/ Karn & Bozzio Primus Meshuggah Amon Tobin that's all thanks