spinning bikes

I've been cycling outdoors for several years during the warmer months and typically turn to other forms of exercise in the winter. My treadmill bit the dust so I'm taking this opportunity to replace it with a spin bike but I'm having a hard time making a decision. I've never been to a class (with 2 and 4 year old at home I have to exercise around their schedules) - I do a lot of my indoor exercise while my 2 year old naps so I think a belt drive would be the better option for me - them seem to be much quieter. The two bikes I'm most interrested in are the Lemond Revmaster sport and the Multisports ENC 500 - these seem to be newer bikes and I haven't found many reviews. Any input is appreciated.

I have been going to spin class since January, and the bikes are Lemonds...i will check the model and write next week. I love spin class.