I am looking at buying a stationary bike for my house for the winter.
What about getting a Trainer instead? I believe they're cheaper and smaller and you would be sitting on your own bike - so you know it's fitted to your body! I'm going to get one this fall and by winter, one of the local bike shops moves inventory over and has "spin" parties after hours with their shop team. Everyone brings their bike and their trainers and they ride to a tape. They do this in place of their normal ride when it gets too cold! I'm hoping to join in this winter :)