I like this module. Installed for a client, and every problem I had with it was very well handled by the support team. I had to fix a problem in a meeting with one client, and they did the trick for me. Their support is incredible :) one has to admit, they do have the client in mind, free or paid... all treated the same: good. They're support become a reference for me.
By the way, my specific client loved the module and are very happy. And the best: it has virtue-mart integration :) so... newsletters with a link to the cart - very good business orientation