I bought a Wilks USA RX510 pressure washer to replace an old and tired one - and I am astonished at how good it is for the money. The pressure washer was delivered by courier the day after ordering, I had it assembled in about 10 minutes and has washed two cars in another 20. The machine and accessories are really well manufactured, everything fits properly and looks like it will last. In operation the detergent dispenser is very good, and the supplied nozzles gave a good range of jets for cleaning the whole car (underneath as well). I am really happy with this and recommend it.