Ask HN: Most responsive VCs/Angels/Advisors

I am nearing completion of my MVP and I have started reaching out to VCs/Angels/Advisors to start discussions around seed money, advise etc. I am trying to put together a list of folks who almost always respond to random questions from crazy entrepreneurs, so that I can keep reaching out to them at different phases of my product development. So if you guys know of folks who are responsive, please share. I will start.. Brad Feld from the foundry group always responds back with comments/thoughts. I always use him as a sounding board for my crazy ideas.