Before that I tested Feedback Factory, RSFeedback and obSuggest, but none of them were functioning as advertised.
MijoVoice is the first one that does the job as promised. This component installs like a charm and works straight out of the box. It's a well-constructed component and has quite some optional settings.
I'm using this component on a development- and support-community website.
For us the Kunena integration was most important, as well as the option to vote-up for and idea with just one click. This component comes closest to the way Uservioce works.
I contacted Mijosoft twice (pre-sales and support) and both times I got a quick and friendly reply.
So, thumbs up for this component. Worth the money!