I hate to throw shade on Indie at this stage, but their playlist might be more constricted than the Edge.
That might be a function of the current weak state of alt music, but I set my radio to wake up to Indie and it's either "Run Away to Mars," "World's Smallest Violin" or "Trampoline." They also rotate non-grunge 90s heavy, like 311 or Sublime. I've heard Arctic Monkeys and Black Keys but haven't heard Arcade Fire yet.
They've sent grunge to the rubbish bin for the most part other than the occasional Pearl Jam song, which was a crutch that late-era Edge leaned on way too much. That's a major plus.