I've been thinking of getting a trainer for some indoor workouts this winter. I guess the two technologies are magnetic and fluid. When I visited the LBS, the kid who waited on me sort of sneered at the magnetic model and said that I "had to have" a fluid trainer. Thing is, there is about a $100 difference to go to the fluid style; I can buy a new CycleOps Magneto for about $180, with the equivalent fluid model more like $280 (and the LBS was trying to steer me to the yet more expensive Kurt Kinetic).
So I thought I'd put this before the "voice of reason" that I usually find in this forum. Are there really any major disadvantages to going with a decent-quality mag trainer for someone our age who is looking to stay in shape and get a good workout, as opposed to being on a serious training schedule? I'd probably just ride for maybe an hour at a time, and just hard enough to work up a good, but not dripping, sweat (or so I say at this time).