I had the earlier version of this remote system for many years in my last house. It never gave any problems, and so, when it came to the shower in this house, there were no doubts about choosing this newer and more powerful version, given my experience of Triton reliability.
Super product and well priced, However I can't see the point of the wireless version, other than for the gadget mad.
Nice styling and great performance and no nasty intrusive lump of shower unit in the cubicle. I chose the remote over the wireless model because (a) the only installation difference is one tiny hole, and(b)wireless systems are liable to interference from other wireless sources.