I like that it is able to understand my speech more than any other program out there! It doesn't work great when you are talking fast or in noisy environments, but for simple things such as just making calls this works really well.
There's nothing i dislike about google voice recognition software except maybe how hard its sometimes to use (especially if your not used too). If someone has never heard of another product before they should try using gvoice first because once everyone realizes what an amazing toolgthis can be then most will switch over from their old system which usually was awful compared to gvoice now days!!