I wouldn't consider either Malibu or Coconut to be 'tacky'. Both bars are run by dedicated, friendly people who are trying to make a living.
The 'music war's will never stop, it's been going on for a very long time.
My personal choice will always be Malibu, although we do drink in Ammos, and at the Mathraki Bar.
Malibu is large enough to be able to have a decent conversation, lots of places in the bar that are away from the music