I prefer just ordering omakase at sushi restaurants. Tama has three different levels of omakase, with the largest and most expensive being $50. Aside from a rather large bowl of tuna soup that was topped with a puff pastry crust I had last time I was there, it's actually not *that* much food - 12 pieces of sushi, a plate of 4 small appetizers (more like amuses bouche), soup, and dessert. I don't have a very large appetite, but I don't think I would order either of the lower tiers of omakase unless I somehow ended up there when I wasn't very hungry.
As for specific pieces of sushi, I remember their ebi (cooked shrimp) being very good. It was much better than your typical ebi - I think the shrimp were grilled or something.
I used to love, LOVE Tama however, recently it has slipped in overall quality. The fish is still good but Katsu hasn't been around of late and I believe he's opening a new place somewhere over the hill. His staff at the sushi bar is hit and miss. The pacing is rushed and even more eggregious, the television at the sushi bar is invariably on to make what was once a pleasant experience, agitating and distracting.
To quote BB King, " the thrill is gone."