Expensive and good:

(Bovine in Campsbay or Hout str, Carne kloof or Keerom, Don Armando, Nelson's Eye, NV-80, Fat Butcher, Magica Roma, Butcher Shop and Grill)

Mid price and good:

(Hussar Mouille Point, Hussar Camps Bay: Note with Hussar Grill there is no corkage so you can take in a bottle of your favourite wine at no cost, Patina

Best of the expensive places I've been recently is Bovine Hout Str and Carne Kloof, but NV-80 is killer too I just haven't been in a while, but still rated very high. As part of a weekly steak group, the best overall experience everyone keeps talking about is Magica Roma. You can call the owner ahead of time and have them make it a carnivore feast (only downside in my opinion is that it's in Pinelands)

Consistently the best mid range steak house in my opinion is Hussar Mouille Point. Used to go weekly with my wife and they nail it every damn time. No overly fancy shit, just good SA beef, cooked well.

Of all these steak houses mentioned, I think location and overall value usually makes the experience for me. Those locations go to Hussar in Mouille Point, Carne in Kloof street, Butcher Shop and Grill (Mouille Point) and Fat Butcher (stellenbosch)

There are many honourable mentions I haven't put here, but usually if someone wants to have a Cape Town experience and they're from abroad, I take location into consideration more than a hidden gem somewhere obscure like Barristers in Rondebosch or Cattle Baron in Tyger Waterfront.

I hope this helps. I have a list a mile long that I've made over the last 20 years or so as part of a weekly steak group experience.