We currently have 4 in use at my shop right now. They work well, nice adjustable nozzle from fine atomization to stream, as well as a locking mechanism for constant flow without holding the "trigger", if you will. Just be careful of over pressurizing, as we've had 2 seals fail in the past, likely due to that reason. I'd consider them a good bang for the buck.
I don`t know if there the same ones over here, but I`ve broken 2 because I`m ruff with my detailing gear. I drop stuff all the time so the pump broke partially it still works a bit but it should give you great use if you use it carefully.