Dennis-
It's actually the "Nexstar." You can do a search on RCU to find out people's thoughts on the Nexstar. There is also a review of it at AMA's beginner web site,
http://www.masportaviator.com/ah.asp?CatID=1&ID=15. Most people don't like the "autopilot" and want to ditch the bolt on devices on the wings pretty quickly.
Instructors generally don't charge anything (although there are some exceptions). It is usually a nice gesture, after a few sessions to buy them a gallon of their favorite fuel or get them a gift certificate to the LHS.
Have fun!
-Scott