Every warped record I have received that the Sota would not clamp in the last 5 years has been from Amazon. Their return policy is seamless, but I have noted that as of late they are using record specific packing. If the Sota clamps it the record becomes one with and as flat as the platter. The records that the Sota won't clamp are usually dished more than warped. It will clamp the concave side but not the convex side.
The Orb is a great piece of work and had I turntable with any other form of clamping I would definitely go for it. Forget about being able to track the warp. Even minor warps will create enough pitch irregularity that the illusion is ruined. Eccentric spindle holes are another pet peeve of mine. Drilling a concentric hole just takes attention to detail, proper set up. If you can see the tonearm oscillating back and forth you can hear it on sustained notes.