Pros:- Free!- Able to import shapefiles (points, polygons, etc), reads attributes well.- Streams Google satellite imagery and able to set alpha of layers- Cool way to choose a "cover" image for your project- Good performance- Excellent support of projections and coordinate systems- Works well with iTunes for importing/exporting custom data. Good instructions.Cons:- Easy to forget you are in "Identify" features mode when you mean to pan the map. Would also be nice if user could customize the size of the selection rectangle for "Identify" features mode.- Raster images are compressed too much by the 3rd party maptiler software which is necessary to create compatible tiles. Would prefer if it could also handle KMZ files containing custom raster maps. The help file has decent instructions for using maptiler.- Sometimes you have to press "Done" and re-enter the project for your custom raster maps to display despite enabling the layer's visibility.- Occassional crashes when loading imagery/data but generally stable.- Have to use (go to project info. screen and change "Editing Layer") an imported points layer containing points when adding waypoints in the field otherwise it gives an error, something about next feature ID not existing...Well done The Geometry Team!