If you like electric, the T-Rex is hard to beat. This is a known good performer, and it will be more stable than the NR you had.
It can handle more wind.

Going nitro has it's pros and cons. I can fly my T-Rex in my back yard, or at the local little league park, but the neighbors would not allow a nitro. A bigger nitro bird will be even more stable than a T-Rex, but you have already learned on a small twitchy model, so the T-Rex should be a great upgrade.

Vince