Have you ridden any? Do you love them? Hate them? I picked up a SRAM S-7 wheel from my LBS for a ridiculously low price after another customer ordered it then didn't like that you have to stop pedaling to shift it. I wedged it into the back of my fixed gear and rode the heck out of it. It has a coaster brake which alternates between fun and a PITA though. I'm working on building up a new bike and I was originally thinking about a traditional drivetrain but now I'm leaning more toward a shimano 8-speed hub. I like the idea of the new shimano 11 speed hub but they only offer 1 shifter (not terribly compatible with drop bars) and i wouldn't describe it as a proven component yet. For the casual riding i do i feel like the 8 speed is probably 'good enough' and I can always upgrade to the 11 speed later. Share your tales of internal gear hubs here!