I actually dont
use any of them, but I have fooled around with MapTools a bit and certainly recomend looking into it.
The Wrathchild has spent quite a bit of time on these fora and the maptools forum as well and can probably not only assist you, but make a good case for Maptools.
http://forums.sjgames.com/showthread.php?t=48712
For me, Maptools benefits were:
- Easy to Build Maps
- Has nice video tutorials
- FREE
- Hexmaps
- A neat Line of Sight Feature
Nymdok