I am currently trying to fade out the use of MapInfo and only use QGIS (or Global Mapper) however I find that I am still needing to use Vertical Mapper for interpolations. We are using MapInfo V12 and QGIS V2.8. Below are images of Vertical Mapper grid interpolation using Nearest Neighbour and QGIS grid interpolation using nearest neighbour. Vertical Mapper's output is much more smooth and allows for smooth contour lines to be created. I guess what I'm asking is can QGIS produce these results?