I was encouraged to try this place as an alternative to Z Sushi in Alhambra, which is excellent. Gengki is in the same complex in MOnterey Park as Ocean Star Seafood, Charming Gardens and Harbor Village. It is most definitely NOT in the same league as Z Sushi.
The "B" rating wasn't much of a deterrent, as most of the places in Monterey Park have a "B" or less (New Concept recently sported a "C" and we loved it). The menu offers up a bunch of different tasting menus for 2 or more, starting at around $35 per person, and there are also numerous lunch specials : teriyaki and sushi, Bento Box specials, tempura combinations, for very reasonable prices. The sushi prices were reasonable as well, but the food just wasn't very good.
I ordered a la carte and friends had lunch specials, that came with miso soup and salad. The miso soup was good. I ordered the "Diane Special," named for a friend of mine who frequents the place -- this was the really only excellent dish we had -- essentially a California roll in soy paper with spicy cooked scallop on top. A bit spicy for me, but tasty. I also ordered hamachi which was only so-so, and albacore sushi, which came seared for some reason (probably because the fish wasn't that fresh) and it was not what I wanted or expected.
The salad that comes with the combinations was excellent, but I was told that the chicken teriyaki was gnarly. Although, to be fair, the Bento box was only $9.95, and it came with edamame, teriyaki, tempura, sashimi, salad, and fruit. Another friend ordered the sushi bowl, which was a bowl of rice topped by tough squid, tough octopus and barely edible salmon.
Service was slow, and they ran out of diet coke.
If I went back, I would sit at the sushi bar and let the chef guide me as to what is good. That's what I wanted to do, but we ended up sitting at a table.
IN this part of town, Z Sushi is still the best I've found.