Please explain how the Kreitler Headwind resistance unit works. Is it wind in conjunction with magnetic resistance? In other words, as you increase the wind "resistance", the true magnetic resistance is increased?

Also, I have no way to compare my new E-motion rollers to any other type since I'd never ridden rollers before these. However, my son owns a set of the Performance Travel Tracs and said that my E-motions are much smoother and offer greater resistance at the zero setting resulting in a better workout/training session. He said that basically he can only spin on his rollers.

As far as getting out of the saddle, herein is where I discovered one design flaw of the E-motions--the lack of rubber pads/stops on the bottom. I had mine on my tile floor and the weight shift that resulted from my first attempt to stand and hammer caused it to slide across the floor and me to fall, scaring the ish out of my wife. A trainer mat solved that. Should've filmed it for posterity!

I find 'em to be well-designed and well-built. I love 'em.