The thing is, from a teacher point of view I've looked at pretty much all the different voting solutions, and found Qwizdom to be the best - in terms of its integration with powerpoint, the reports it generates, how easy it is to just get the set out and start using it (assuming you are well organised teacher of course) and more besides.
What I am finding is that most network managers seem to hate the thing because of the issues of installing across a network. This is the big issue with it as far as RM CC3 is concerned it seems.