My son has sent me a message he wants to put his single speed bike on a turbo trainer to get some exercise,and which one is ideal.Right how long is a piece of string.So i have suggested borrowing mine for six months to see how long the idea of turbo training lasts.But i would like to give him an idea of a good trainer at a competative price,northing too costly,so one and all thinking caps on please.Ideas needed thank you.