I might have been thinking of Twist by Pierre Gagnaire, though his premium tasting menu comes with matched wines for the $777, so I guess it's a bit of a steal.

Back on topic, I'm actually back in Vegas in April and am wondering whether it's worthwhile going to any of the serious restaurants there. I did the Joel Robuchon Atelier last year after I couldn't stomach the cost of Robuchon's proper place, but it's still on my to do list after a delayed flight caused me to miss a booking there a few years ago.