You could buy a used gun that has been upgraded for cheaper.
But out of the two, I would go with Lonex; they are known for their internals. You could run an 11.1 LiPo in any gun, even a Sports Authority clear plastic M4. The question is; will the gun be able to take the beating?
I would personally go with the Lonex. Or even get a used gun. There's a lot of great deals on the forums. Just look around.