When my wife and I stayed at the Signature hotel outside the MGM Grand, we tried to visit as many MGM bars as we could. Just to sample...a drink at each one.
My favorite was Whiskey Down. Every signature cocktail was just $10 and they were amazeballs! It is extremely rare to get such great tasting drinks for so little a price...for that alone, they deserve 5 stars.
We're coming back to Vegas this weekend. I was stuck between Vdara and Signature again...only because of this bar. I ultimately picked Vdara as it was new to me but I will definitely take advantage that the ~$20 valet fee gives in/out privileges at all MGM properties - so here I come Whiskey Down ;)