This place is ok, but I definitely don't get the hype that surrounds it- there are 1/2 dozen or more places on the strip that are substantially better. Many reviewers go here frequently it looks like- I have only been twice but based on those visits I won't be returning.
Everyone raves about the Oxtail cheese fries- but the ones I ordered were essentially mush. The cheese was extremely greasy- something I would usually be all for- but they lacked any clear flavor and the fries disintegrated if you tried to pick them up. I consider myself a bit of a cheese fry connoisseur- I didn't attend 7 years of cheese fry medical school to be called Mr.- so this really hurt the rating for me. The addition of cheese to fries is a sacred act in my religion and must be treated with respect.
Truffle fries- these were much better.
I have had two burgers there-the spicy miso and the Ronin. Both came a tad overcooked (grey throughout when ordered medium rare). The flavor wasn't that strong - I don't know a better way to put it- the burger just tasted weak.
Service- as other reviewers have mentioned at least the Summerlin location is not very busy/it is easy to get a table. However, despite not being full the service was not very attentive. The meals probably took an extra 30-45 minutes due to slow ordering/check bringing etc.