Update (March 2011): unfortunately both of our favorite chefs have left Hachi, plus they raised the prices of the lunch special so we haven't been going back.
I love Hachi in West LA for their omakase; it's my go-to omakase place in LA (I prefer it over Sushi Zo, Sasabune, Sushi Sushi, Echigo). They have a nice variety of fish and unique preparations, plus the chefs are really nice (in contrast to Sushi Zo, Sasabune, Sushi Sushi). Prices are comparable, if not a little cheaper than the previously mentioned places ($65 - $85 per person), and for some reason it's always pretty empty so you don't really need reservations in advance. I went for lunch today and we ordered two of their lunch specials, which I think are the best quality lunch deals in town. We ordered the bara chirashi ($11.50) and the Hachi chirashi special ($12.00).
Both lunch specials came with miso soup and a salad with ginger miso dressing. Pretty standard, but the salad greens were very fresh (and not just iceberg lettuce) and the dressing was very nice.
Hachi Sushi and Robata
12009 Wilshire Blvd
Los Angeles, CA 90025