I AM LOOKING INTO BUYING A SURFACE CLEANER. ANY INFO WOULD BE APPRECIATEED. HOW BIG CAN I GO ? MY MACHINE IS A 3000PSI ,HONDA 11HSP.,COLD WATER . DOES IT SPEED UP CLEANING TIME? ANYTHING ELSE YOU THINK I WILL NEED TO KNOW ? I WILL BE USING IT ON DRIVEWAYS . ALSO DO YOU JUST CLEAN DRIVEWAYS WITH...