Had the $70 Omakase menu at Inatei, arranged before hand to be Sushi&Sashimi only. The quality and variety of fish was very good, but nothing that would beat Zen out of the park IMHO.
still, I would return but for the quantity just because Zen . we received 6 pieces of Nigiri each and a total of perhaps 7 pieces of sashimi. I was so hungry that I had to order a spider roll (worst part of the meal) and a toro hand roll (very good) just to get full. This made up ca. $165 just for food pre tax and tip (including 2 very small desserts which were good and followed our added order of rolls).
now, I left happy and full, but for $165 you could get much more fish in Zen(two omakase sushi and two sashimi dinners and a spider roll!!), without, in my opinion, losing anything in terms of quality.
I think I made a mistake in ordering sushi and sashimi only omakase. perhaps the non-substituted omakase will be a better deal. The fish and preparation is good enough for me to go back and try the 'ordinary' omakase though. but for just sushi/sashimi, I am staying with Zen.