Buy a knock off and have a play, most pens are knocked off idea anyway the basic idea inside a pen is a swash plate movement, everyone has ripped that movement off, like carts today most are the same chinese crap recoloured and packaged. With size of the small machines about today i.e flite nano etc time you set it up its no different in size to a pen, so dont fall for the pen(i)s are better. i would wait for the fki one, goto their youtube channel and watch gastons vids you'll get a good idea on machines and zion might come out in 2 different types.

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