I’m not aware of anyplace in Monmouth, or even Middlesex, that serves top flight Sushi.
If you want that kind of experience take the Seastreak into the city.
Most of the sushi around here is made by Chinese, if not Mexicans, and evolves around indifferent executions of salmon, ahi, crab stick, yellowtail, colored flying fish roe, avocado, cream cheese and, worst of all white tuna.
(Escolar, or “white tuna”, is something you see often on menus around here. The fatty esthers in escolar are indigestible, as a result they actually cause diarrhea! Imagine that, sushi restaurants actually serving you fish they know will make you sick.)
The above ingredients are usually rolled, sometimes in strange combinations, but sometimes not. If a place is really exotic, they may have grilled eel or mackerel on the menu. Sea Urchin is invariably well aged, and to be avoided.
Obviously from the foregoing I am not a big fan of Monmouth sushi. If you are going anywhere make sure they have a big turnover so the fish is not sitting. I would also avoid Sundays and Mondays.
Two places that I find are a bit above the run of the swill around here are Kanji in the Shrewsbury plaza, and Tokyo in Freehold for the lunch buffet. Sono in Middletown is also ok in a pinch. But you won’t find anyone who trained in Japan at these places, if you want to talk to the chef you will need to speak Fujianese.
And as noted none of these are great, or even very good, compared to what you can get in the city.