The Minoura 850R Mag Bike Trainer is a solidly constructed and extremely versatile trainer. I have not had a lot of time on this trainer at the time of this writing but enough to give a pretty accurate assessment of the pros and cons of this Minoura... 

The Minoura Gyro V270 Mag trainer is a high tech offering from Minoura that combines the best parts of a fluid trainer with the superb dependability of a Mag trainer. The Minoura Gyro Mag trainer utilizes a high tech flywheel that is specially counterweighted... 

The Forza F2 Magnetic Bike Trainer is an entry in the cut throat entry level mag trainer category that is littered with budget offerings. The Forza F2 Mag trainer is very similar to most bike trainers and offers many of the same features, it's foldable...