Thank you so much Dude. That's what's I needed. I'm actually going to be road racing on them. That's why I had the question. They look very similar. I bought a set of the TT, tubulars because the aeros were not available. I guess the worry I had was in regards to stiffness out of the saddle. I know the lower spoke count is going to offer a lack of stiffness in the TT but I think the difference is going to be so minor I won't be able to detect it.