I bought this as a replacement for an old one of the same model. The build is slightly cheaper (self tapping screws into plastic wehere there used to be nutserts) but it's still good value. The pevious one lasted about 10 years before the motor brushes gave out. The coild for the solenoid valve is a slight weakness; I had to replace it twice, but it was a quick job and only a tenner. As for the shower itself - very effective and well worth having the thermostatic control.