RE: t hawk
I've heard great things about the T-Hawk, and they package it with some spares.
I have a Challenger and there are two hobby shopps nearby that stock LOTS of Challenger spares. Most good hobby shops that deal in RC will have them.
While the T-Hawk brings a couple of extra wings and tail feathers, there's stuff that happens that you can't foresee. I dropped my transmitter and snapped the antenna clean in half. Off the rack at the hobby shop. If I'd had a T-Hawk they might not have one that screws right in so you're on the web for a replacement and grounded until it arrives.
Just stuff to think about.
Cheers!!!
BobbyG