RE: magix extra or twist 3d?
i have a magic extra with a .52 magnum and currently 12x4 prop and overall it's a nice plane for the price. it's very good for 3d, but it doesnt track as well as i'd like for pattern maneuvers. the c.g. recommended in the instructions is way too far forward. you'll need to move it back by at least an inch for it to fly well.
in knife edge, there's more coupling than i'd like. rolls arent perfectly axial (but good enough), and it doesnt track perfectly straight. the covering does come off too easily. but other than this, it's a great plane that'll do almost any manuever the pilot is capable of. i never was able to hover before, but learned pretty quickly on this one. it was surprisingly easy compared to my other planes.
brian