I bought a Schwinn Evolution spin bike off of Craig's list last winter. I like that I can set it up to similiar riding position as my road bike, not exactly, but the geometry feels more like a road bike than the staionery bike I have. I can also ride out of the saddle which I couldn't do on the stationery bike. I have a Lifecycle 5500 that I am trying to sell since I bought the spin bike. It is a good statio nery exercise bike but very different from a spin bike and not comfortable to ride for more than thirty minutes due to the wide saddle.
Riding indoors does get boring. I bought a few Bike o Vision DVD's so I can sort of pretend I am out on the road