Originally Posted by
revchuck
One drawback of older wheels is that the freehubs are limited to ten speed. I got a nice set of Reynolds 66s cheap because the previous owner went to 11 speed. IMO, if you're going with Shimano, going with 11 speed is worth it; don't know about SRAM or Campy.
Good point. For ~$70/hub on some hubs (Easton EC90s, PowerTap), we bought new freewheels that were 11 speed, but others (Zipp 900) I could not find that option.