Best individual steak I had (twice) last month was the 21 day dry aged bone in Ribeye at Le Cellier. Just wonderful, cooked to perfection, and huge, like 24 oz.
The best overall steakhouse experience I had last month was at Shula's, from the incredible service, great apps, knowledgeable sommaliers, and great dry aged steaks, right to dessert (soufflé) and coffee....everything was impeccable, although lacking in Disney atmosphere. Oh, and Shula's is a better value than other steakhouses at WDW.
I've soured a bit on Yachtsman's after our visit last month, though I will give them another shot. We have been there numerous times over the past 5 years, and enjoyed it very much. What's wrong? Subjectively, the recent renovations and menu changes are not to our liking. But menus change, and will change again, and the atmosphere is still wonderful. Objectively, Yachtsman's suffers from not being able to live up to what it wants, or holds itself out, to be. It wants to be a premium steakhouse, but, as good as it can be, it falls short of the mark in everything but the steakhouse prices. Yes, they have the cool looking butcher's cooler where they "age" the steaks for 7 days.....but they aren't true dry aged steaks, like everything at Shula's, or the ribeye at Le Cellier. The service is pleasant, but no where near as attentive as Shula's, which is a true steakhouse. Yachtsman's doesn't even demonstrate a commitment to the steaks they serve, as two of three steaks on our visit last month came to our table over done, and nobody even bothered to ask if they were prepared to our liking. There's no excuse for that in a true steakhouse. Maybe we just had one bad visit, and we will go back, but Yachtsman's needs to step it up if they want to compete with Le Cellier and Shula's for top steak honors.
For absolutely great steaks with true Disney atmosphere, go to Le Cellier. The bone in ribeye and mushroom filet are both excellent. Just about everything else they have is as well. I had the duck confit poutine.....and the layers of flavor for a French fry side were amazing.
For a true all around wonderful steakhouse experience, with great steak (they are all great) and impeccable, attentive service, go to Shula's. The Ahi Tuna app is the best I've ever had, the surf and turf (8 oz filet and 2 lb lobster) is a relative steal for WDW, and while they have no kids menu they will split a steak in the kitchen and serve it wonderfully. Really, everything was wonderful....other than the non-Disney vibe.
Have a great time, whichever you choose.