The best source for Midwestern math-ish indie/instrumental/emo rock, Polyvinyl has put together a damn fine (and balanced) sampler for those uninitiated.
Best friend and most eager to give hugs to gentle indie rock bands, Holiday Matinee is a PR firm that believes in and loves its roster at the same time.
Though not at the top of the hierarchy, Sunday’s Best does a fine job of holding their own in the genre of “sometimes Knapsack, sometimes emo new wave.”