In a medium mixing bowl using an electric hand mixer whip Neufchatel cheese until smooth and fluffy, while occasionally scraping down sides of bowl. Add in sour cream, honey, granulated sugar and vanilla and mix until well combined. Place red and green grapes in a salad bowl. Pour in sour cream mixture and about 3/4 of the pecans. Toss to evenly coat. Sprinkle top of fruit salad with brown sugar then sprinkle with remaining pecans. Keep chilled, serve within a couple of hours.
