TG and zona, thanks for the input. I've read most (if not all) the posts on this forum and I'm leaning away from the Sweet 16's. It seems they are high maintanence and also have a chance of failure in high stress situations. My wife and I are very aggresive riders and I'm leaning toward something a little more stable. The Velocity Aerohead rims w/ Chris King hubs that was mentioned sounds like a more practical solution. Not as light as the 16's, but more worry free. We're still looking and open to suggestions.