HTWWW without a doubt, no contest whatsoever, 1972 plant's voice is still powerful, the tempo's hadn't slowed down, the band was absolutely on fire - highlights for me are the black dog guitar solo - perhaps my favorite bit of page playing of all time, the band is cocky, on-fire. absolutely love the riff coming out of the heartbreaker solo, t's extremely powerful, OTHAFA is great, acoustic set is great, dancing days, bring it on home - in 1972 they were still playing at the same tempo as plant could still hit the high notes. There is entirely too much guitar wanking in TSRTS, plants voice is raspy and tempo's are adjusted causing the songs to drag on and on - there are definitely some highlights in TSRTS and I'm grateful that we have it but my preference is HTWWW by a mile, i would've loved to have seen them in 72, absolute peak of playing in my opinion. Best band in the world.