I’ve used a bunch, so here are my one sentence reviews:
3T Vola: Good adjustment, comfy, good price
3T Aura/Brezza: Nope, ignore these
Zipp Vuka: No fore/aft adjustment, comfy foam but weird cup shape
Giant Trinity: Good adjustment but lousy shape and lousy foam
Aerocoach Align Wing: Heavier but very stiff, minimal foam but the tall sides really lock you in
51 Speedshop: Great adjustment, good shape, great foam, lightweight but a bit flexy if not centered on the underlying clamp.
Alex Arman
Strava