The electrics are not all that easy to fly especially 3 channel. Most (stock) are underpowered and unresponsive. The ones that do fly good are not really beginner planes.
Beginner glow planes my choices would be
1. Sig Kadet Senior or LT40. Both fly excellent
2. Alpha 40 or 60. They fly great and the RTF version is a good value.
I've trained new pilots on all these planes and can say from experience they are fine beginner planes.

I can't comment on the Nexstar. I've seen them but never flown one.