OK, I've now had the opportunity to visit Island Creek Oyster Bar (ICOB) three times and have had three flawless experiences.
Been to Neptune eight or ten times.
ICOB oyster slider may be my single favorite thing to eat. Last visit on this past Friday, had a cod entree (for which I cannot find the menu description, sorry) that may have been the best seafood dish I have ever had. It had some sort of (very subtle) smoked meat in it.
I have not been shy on this board about my criticisms of Neptune Oyster ... but the food is superb there as well.
ICOB - large (love the space, very creative), noisy, takes reservations, awesome selection, very friendly, very knowledgeable staff, superb food, pricey
Neptune - small (cramped), no place to wait, no reservations, smaller selection, service is borderline rude - best case indifferent, superb food, pricey
Perhaps you see where I am going with this. Time to stop directing every potential Boston visitor to Neptune?
63 Salem St Ste 1, Boston, MA 02113
Island Creek Oyster Bar
500 Commonwealth Ave, Boston, MA 02215