I can’t think of many things worse to do on a bike than ride it indoors on a stationary trainer. After all, without the world going by and the wind in your hair, you’re effectively just sitting on a stool and waggling your legs.
However, if forced to use these blow-up dolls of the bike world, then I’d insist on one that connected to my iPhone 4S or iPad 3 via Bluetooth 4 and let me control it and hook it up with third-party app. And amazingly, that’s just what Wahoo’s Kickr PowerTrainer does.