Pamplemousse, a French-Continental restaurant just east of the Strip on Sahara, might be described as a "sleeper" on the DLV schedule. It's mostly been done with smaller groups over the years, but it's always been very highly rated for both enjoyment and comfort.
Pamplemousse got a good review this week in Las Vegas Weekly. Surf here:
http://lasvegasweekly.com/dining/2015/j ... estaurant/
Of particular note in the LVW review was the specific mention of value: "The value you get at Pamplemousse is incredible. You would pay four times as much somewhere else for this food, without the unique atmosphere."