B'BOOM - Official Bootleg - Live in Argentina, by King Crimson (1995): This live document of the fairly short-lived "double trio" variant of the Crim is what I fall back on when thinking that the six-piece lineup may be my favorite. It's not just that the THRAK material is very good, it's that the older stuff gets an extra set of huevos with all them guitars on stage at once. Case in point is "Indiscipline," whose fierier portions greatly benefit from having two guitars and two Sticks wailing away together and all at once. Even "Lark's Tongues in Aspic, Part 2" has more gravitas here than elsewhere. Cool cool stuff.