Before I give you a list of some places to consider... perhaps you can explain what you expect from a Steakhouse? The reason I ask this is that in Argentina, we dont really have Steakhouses (outside of those created for the tourists), simply because beef/meat/steaks are served at just about every restaurant and every street cafe.

If you want a US-style Steakhouse experience, as in a relatively upscale establishment, with service on the formal side, etc.... then I would come up with one list... now, if you just want to eat the best beef, and are flexible on ambiance/decor and how elaborate the service is... then the list would be completely different.

Please give us some feedback and I will join others in listing their favorite locations...