For what it's worth, I'm on the Tower Trainer RTF, $249, I also have the G2-Lite sim. I've seen a couple NexStars. I think the quality difference is vary apparent! My Tower arrived with more wrinkles than a retirement home! Sent it back, next one same thing, finally a sales supervisor went thru several boxes in the warehouse trying to find a descently covered plane, She sent me the best one she could find which was still subpar. Perfectly good airplane to learn to fly on, but certainly not as nice as any of NexStars I have seen.
The G2-Lite sim I have seems more than sufficient as well. I think it has like 11 or 12 planes & 2 Heli's. 3 airport choices and full control of weather conditions, wind speed & gusts, stuff like that. I don't know how much better those other sims are, or how much more beyond what this one has is neccessary, but I thought they cost alot more than $100, I guess I must of been wrong about that.
I think if you can afford the NexStar, you'll probably be very happy with it. There's a kid @ the club where I'm trying to learn to fly who has been flying for a couple years now & all he flys is his NexStar. He loves the plane and burns thru fuel like he's gotta pump in his back yard! Good luck in whatever choice you make.


Mark