Richard and Neil commented that the SkyMaps are different. Obviously Rob's does sat predictions. I took a quick look at Chris' and didn't find anything not in Rob's. Rob's also seemed much easier to use. Limiting this to stars and planets (no deep sky stuff), can anyone list specific advantages of Chris over Rob? Also the other way around. -- Regards, Jay Respler -- JRespler@surfnj.net Satellite Tracker * Early Typewriter Collector Freehold, New Jersey