From my experience
Wild clams look better.
Ultra Grade Clams - Majority are wild.
Black and White Clams can only be Wild, originated from Vanautu.
We had to get those clams somewhere to culture them right?
ORA has great looking clams, some are Ultra Grade. Still don't look as good as the one's I've seen.
Wholesale wild cost's as much as wholesale cultured.
Clams are clams, either you kill them or someone else kills them.
I've purchased some tank raised clams and they die more often than wild.
Why?
Sure the tank raised clam are used to the tanks conditions, but only that specific tanks conditions.
Wild, they go through storms, floods, dry seasons, low tide, high tide and still manage to survive somehow. Going into a tank is like a luxery for them. Not having to worry about anything eating them.
I'm like 90% of the reefers here. If it looks nice and cheap I'll take it! LOL!
Some reference pictures from the internet.