pan fryed is better than grilled imo.
Get it to room temperature before cooking, need a very hot ban, otherwise it will try to boil it's self. salt and pepper and lightly oil the steak not the pan. This stops the pan smoking as there's no oil to burn apart from where the steak is.If you can get a nice thick piece, 1.5" is perfect, with some marbelling, not big fat lines just marbeling. eg.
A good steak needs fat, fat is flavour. It's not the quantity of fat, it's the distribution. You need a little bit everywhere. Which is why a marbled piece is great.
Poking the fleshy part of your hand under your thumb, while your thumb is touching one of the fingers on the same hand or none at all will feel the same as your steak at certain levels of doneness.
* thumb + no finger = rare steak
* thumb + index finger = medium rare steak
* thumb + middle finger = medium steak
* thumb + third finger = medium well steak
* thumb + pinky = well done steak