i am starting up and am looking at equipment,i have looked at a 24-30 inch whirlaway with skirt or wheels and a minimum 200 bar cold water washer,i need to know the best generator,petrol or diesel and were to purchase and get best advice etc,2 friends have offered me their large driveways to start off on and get some paid practice,i already have a mercedes van,what is the best set up,is it worth getting a water tank,i`ve read a flat one is most stable,i might get a good chunk of my start up costs from these jobs as they are 50 feet wide by 100 feet long and are just covered in dirt and moss,i have told them not to expect too much and to be patient as i am learning,they are in a well off area so if i get the right gear and impress the well healed neighbours i might get a few good jobs out of it,cheers