I have been to every top steakhouse in the city over the past 15 years and, while Mitchel's was my favorite, Hyde Park took over the top spot once Ruth's Chris ruined Mitchel's.
The staff is knowledgable, friendly and work well togeher. The atmosphere is pleasant in the bar area, but prepare for a more demanding environment in the dining area.
The menu could be a bit more expansive, but there is a nice selection and they prepare everything very well. I would guess that I was pleased with my meal only 1 or 2 out of 200.
It can be a bit pricy, however you do get what you pay for. I would recommend.