Simon,
some simple questions for you .
you state the rx20 cleans at the very least 50% better than a normal wand , I fail to see how !! perhaps as you state, you could prove this statment in some way.
Do you have figures? Have tests been carried out to prove this ? Or is this just a theory of yours?
If as you state this is correct, then a hell of a lot of c/c are not getting their custys carpets clean, and how on earth Can some of the advertising state " the cleanest carpets ever " unless of course they own a rx20?
Geoff