As a long time user of the Philips pronto 890 I have just upgraded to the new TSU 9600 with the serial extender....and think its fantastic. (I am easily pleased) I control my Meridian G68J and 598 using serial control through the extender, and so far its rock solid....Very pleased indeed.

I feel it has the right balance between hard buttons and screen buttons.

861v8+ID41, DSP8000, DSP5200HC, DSP5200, HD621, Lumagen Radiance XD, Panasonic TH50VX100, Dune 3.0. All controlled via Philips Pronto 9600 & iPad 3. (Living room).
MS200, DSP320's speakers (Kitchen).
Roon server on i7 Sonictransport supplying the 861,MS200 and a couple of SB touch.
Explorer for my Mac Pro.