Judging by previous threads and comments on this site, Powrtouch is the one to go for, if only for the excellent warranty service. My own experience this week would support what everyone else says. The fitter attended at my house exactly when he said he would was full of advice, carried out the necessary work though that didn't solve the problem. The problem was one of poor advice from a dealer, rather than the product, and I needed a more powerful mover for my twin axle. Have upgraded and unit to be delivered Friday and fitted at home next Thursday. Can't fault the company and especially their fitter.
Ian