Gosh - I did start hares running! So as the OP I probably should share that after a few days of very helpful input from the forum I have gone for a.... Carrera Crossfuse. I was really torn and Woosh look brilliant and love the design and the speed of replies etc but ultimately I had just heard too many times from the experienced the benefit of a Bosch motor etc. Time will tell whether I've made a good choice. Thanks all.