I have the Nexus DSC on my 30" Starstructure an have been using it since it was released. I love it. The database size is huge and many times I do not need a computer. Serge just released an update last week with new catalogs added. The wireless feature works great. I use Astrplanner, Skytools and Safari and will try Megastar next time out. The support is great too. I have emailed Serge a few times and he has either responded via email or asked to call me to help - very good support. The unit is easy to use. It has the 3 point alignment - fix alt ref and 2 star alignment. It also has Mpoint modeling (like the TPAS in the Argo) if you want more precise go to's. This too is easy to use.

Duane