If you are looking for a kosher steakhouse downtown, Wall Street Grill is a fine option. Reserve Cut nearby is significantly more expensive and formal. Wall Street Grill has excellent service, a cute upstairs area and a few great dishes in the bone marrow appetizer and wagyu burger.
If you have to be downtown for work or decide to go on a date in FiDi, this is a good place for a heavier dinner. It is an expensive restaurant, but not the highest end as nearby Reserve Cut easily surpasses it.