WakeMate sounds really cool but I don't sleep alone. It's all about waking you at the perfect time isn't it. That means I get woken up all refreshed and my partner is going to be cranky? Not designed for couples?
I've noticed that if I'm asleep with my Wakemate running and my girlfriend is working on her laptop in bed or gets up to fix a drink the movement created can show up on the Wakemate and affect my score.
It's ok for couples but definitely the ideal situation is people sleeping on their own, I think.