I've got a TACX trainer with a magnet thingy. It's got 7 resistance levels and I play aorund on it for around 3-4 hours a week, when it's too dark/miserable to ride outside. I live in England and so this is a regular occurence. Does anyone know what these resistance levels equate to in terms of incline or road condition? There you go - simple question from a simple bloke. Simple answers only please.