Partial list:
Depth of soundstage: The Wand of Youth, EMI
Depth of Bass: Zoon - Fields of the Nephilim (LP, Begger's Banquet BEGA172) (1st track, side 3, bass goes sub-sonic
alternate: Saint-Saens Organ Symphony, w/Louis Fremeaux cond., EMI
Dynamic Range/trackability: Paranoid, Black Sabbath on white label German Vertigo.
alternate: Verdi Requiem, RCA Soria box. track: Dies Irae
Either LP puts most stereos on their knees in a few seconds.
Most LPs by the Atrium Musicae de Madrid on Harmonia Mundi are good for staging and detail.
Ability of a system to resolve detail within high energy vocals: Village Music of Bulgaria, Nonsuch. Field recording of exceptional merit. If your system has problems this recording will sound like hell.