I've only been to the lounge portion of MIX, so I can't comment on their food. What I can comment on is the great view of The Strip and not unreasonable drink pricing. This is a cool spot to hang out, grab a table, and enjoy a live DJ without having to get dressed up or wait in line.
Drinks were on the cheap side for a Strip property, with bottled beers (the likes of Dogfish Head and Goose Island) only $9, with domestics coming in even cheaper. The view is nice, but it's not directly along Las Vegas Boulevard; it's still worth coming here to see at least once.