Winter Indoor Trainers - what does every use?

Just trying to figure out how to maximize my winter training.... I currently have a Cyclops Fluid2 trainer and was wondering about the Racermate Computrainer. Reading reviews about it - it seems like it works... they even have a Performance Increase Guarantee that comes with it - in 5 months you will see an increase in the watts and speed - and at least 2mph increase in 5 months. All you need to do is ride it 3 times a week for an hour for the increase. So 3 hours a week and your guaranteed to go faster (which means less saddle time when climbing Mt Mitchell). What's everyone think.....? I've never used one but it seems pretty cool...