ADC,

Hook up with a local club and an instructor. If you ask several people you'll get several opinions. As you have already read, some think the NexStar is a 'dog' whereas others disagree. Speaking from experience, I love my NexStar. It was my trainer of choice. I know now that I spent more for it than if I had bought a cheaper plane, bought the other parts (radio, receiver, battery, etc) seperately, but I did not want to shop around. When I bought the package, I was ok with it. I flew the simulator for a long time and it was very helpful.
You'll have people tell you to leave the AFS system disabled and I agree. I used the other trainer pieces on like the wing droops, speed brakes, etc but for only a few flights. Afterwards I was flying ok without them. I am now flying my 2nd and 3rd plane and still love to fly the NexStar occasionally. She was a great trainer but now without the training stuff, if flies great.
Your best advice would be to get an instructor before you buy anything.
Good luck!