I've loaded both Vlingo and the new Google Voice search on my Droid X with the leaked Froyo OS and Vlingo is significantly superior. Vlingo typically nails the request the first time while Voice Search isn't even close most of the times. Voice search is particularly weak with my contacts which are saved Last, First. While it may behave decently searching for "Jones Bob" it fails dismally when searching for "Bob Jones". Vlingo executes flawlessly with either.