We don't splurge on steaks but two or three times a year, usually we just get by on ground steak. But when we do, it is only ribeye. You have to go to a place that really knows and cares about meat, so a good meat market will have the best quality. Marbling is the key to buying steaks. The steak with the most marbling is the most tender and flavorful even though it is not the healthiest. Don't ruin a good steak with marinate. I only cook with garlic salt and lemon pepper. Anything past medium rare is too much. Asking for ketchup will get you shot in our house. Steak sauces will get you a very dirty look. Worcestershire is ok.
I do not usually waste my money on a steak in any restaurant, although I have gotten a very few good steaks while eating out. If you think that you can only get a good steak at a restaurant, bring a couple over to my house and I will show you what a steak should taste like.