Just got one of these for practicing with the kids and vice versa. The one we've got is the 'Pro' model and I've had a bit of a practice with it over the last few days and its pretty good. At the moment I'm still getting used to it and I produce the occasional beamer or wide ball. We've found that you can use windballs and similar as well as cricket balls and hockey balls all with the same pro model. With very little effort you can get the ball travelling at very fast speeds and good accuracy and it looks like the longer term prospects (e.g. by the spring) look promising as by then we should have all got pretty adept at using it and it'll help us in preparing to face seamers in the coming season. Its increadibly fast even in the hands of a 13 year old and its got me wondering how on earth people play fast bowlers - something I may have to ask on the batting threads! Has anyone else used these either in personal one to one situations or in club scenarios and how useful do you think they are?