looking to purchase a power washer within the next month. have about 400$ at most to spend. It will be used for patio, driveway, house, car/boat, other odd end work. would like something strong but not too strong, but dont want it to be weak. i had an electric power washer and it sucked. it couldnt get some stains up. it will be used with cold water. gas preferred. i was looking into a troybilt 2700 psi. looking for a detergent tank too on it.