The prototypes were race frames for Kate which we needed to get done fast, which meant doing them in 853 as it’s something I’m comfortable with, it’s crazy strong, so I could design it quickly without worrying about it falling apart. That frame went from request to drawing board to delivery in 10 weeks! However, Kate’s frame had ProTeam tubing and some other 853 bits which would have pushed the production frameset price up towards £700.
Over the last year I’ve been working with a tubing supplier on a heat-treated cromo tubeset which I’m using on the >X< which is nearly as strong as 853, but just doesn’t do the air-hardening thing. For this application it’s ace, as it allows me to get the frame close to the weight of Kate’s frame (Kate’s was 3.8lbs for a small, the >X< is 4.1lbs for a medium), but at a much keener price, which means I can also squeeze a bike2work priced build in, and based on the tubing I’ve used I doubt any of you would be able to tell the difference in ride feel.
Kate will actually be racing a one off (well, 2 off, spare bike and all) aluminium frame with >X< geometry this winter because as she is racing World Cups and we’ve had the time to do it now, she wanted the lightest thing she could. I can guarantee it won’t feel as nice to ride, but that’s kind of secondary to Kate this winter.