For some reason my MTB does not work well with my Cyclops Fluid. It does not get small enough for the tire (even with the knobby on it). I don't know if it's simply MY trainer, or a more wide spread issue. On my previous Cylcops trainers, this was not a problem.
Fluid is supposed to be the quietest. If you're trying to watch a Spinervals or even just a movie to ride to indoors, then the quieter is better. They are also the smoothest. Having had all three (wind, magnetic and fluid), if you can afford it, go with the fluid.
Christine
Life is not measured by the number of breaths we take, but by the moments that take our breath away.
Cycle! It's Good for the Wattle; it's good for the can!