I picked up the Minoura magnetic with the remote tension aduster. I can now use Spinerval DVDs and adjust the tension to match the training. It also uses rubber grommets which hold the axle more securely than my Cyclops fluid. The Cyclops also could not get a good grip on the axle, so the bike shift and wobble when I rode. The cycleops fluid I have is not adjustable and I had to change to a much bigger cog.