While I've never had Top Pot or Voodoo before (someone remind me next time I'm in the PNW!), I sat across from an FA on a QX shuttle flight recently and, because of the turbulence, got to talk for the entire flight. The subject of donuts came up (someone had boarded with a box of Voodoo), and the FA said that Voodoo's donuts are more known for their interesting flavor combinations and toppings (they're famous for their maple bar with bacon on top, and they also do donuts with different sugary cereals on top), but Top Pot's donuts are far supreme in actual quality.