I have a cycleops fluid trainer and I like it. Yes, they all wear your tires eventually. You definitely need something under the front tire otherwise you feel like you're going downhill the whole time. I picked up a front tire block cheap, but before that, had a chunk of wood under there. The resistance on mine is adjusted with a knob- tighten it and it holds the wheel firmer and you have to pedal harder. Mostly I set it to what it recommended- 2 turns past when it touches the tire, then just shift to a different gear to increase the workload.