I first tried chargrilled oysters on our first visit to NO two years ago at Felix (always long lines @ Acme).
I was charmed.
On our recent visit, I got to try Felix, Dragos (Hilton location), and Acme in that order.
Pricewise, they're basically the same.
Eating a couple dozen chargrilled oysters in one sitting is hardly a definitive survey, but my thoughts (FWIW, maybe 2c):
Dragos was the worst. The shell bottoms were very dirty, caked with mud - kinda offputting, and every oyster had bits of shell. After biting on shell bits on the first 3 oysters, I finished by mashing up with my tongue, spitting out the bits, and swallowing the oyster. Chalk it up to poor shucking, perhaps, but in the Hilton?
I read that service at Dragos could be lousy. Maybe they've been reading the same thing and improved; all workers from hostess, to waitresses, to grill people, to shuckers were very friendly and attentive.
Felix and Acme were very close on the oysters. I'd have to give Acme the win by a small margin. Overall experience was nicer @ Acme, giving them the definitive nod.
With that said, I still would not wait in line for Acme if Felix was available.
I've heard it said that the true winner is Dragos original location. Alas I did not get to try.
I sure miss those grilled, gulf oysters.
I've grilled my own. coming close to those NO favorites, but the Caraquets and Malpeques are not meaty at all and don't stand up well to heat...