In reply to PPP:
I've tried both, I actually have a single orb which I used for warming up prior to getting on rock when my skin is thin. I think the orb is as well made as any other wooden fingerboard I've hung on (beastmaker, metolius, etc). I'd go for the orbs over the wedge as you can hang the orbs one-armed, whereas the wedge is designed to be used with both hands (I think).
The rock rings are nice enough though, nicely shaped, quite comfy on the joints. The woody boards always get a bit painful on the joints for me when dragging but I think that's because they have to have a fairly aggressive edge on them so your fingers don't slip off whereas the resin ones can have a more radiused edge because the friction is good.