one thing to consider is what you are planning for your next plane. The glow fuel packages wil easily convert into the next plane where as the Electrastar will need a much lighter and possibly small second plane. there are not many electric seconds planes I would recommend

as far as the Nexstar, you can order it without all of the bells and whistles and you can use everything that it comes with in the next plane. I have succesfully trained several people on the Nexstar

Don't forget about teh Hangar 9 PTS Mustang. This is a good trainer in the right hands. It's a bit more than most ordinary trainers but in the hands of a capable instructor and with proper instruction it makes for a great training tool and remove all the goodies and you have a pretyy decent Mustang as a 2nd plane