Aircraft are all sized for a particular task, there is no "best" size.
it depends on the size of the airplane or the size of the monkeys ;)
It all depends on the type and size of airplane.
Depends on the airplane size and engines used.
No size it just has to be small
They are supposed to be of average size.
I was in an airplane last week, and the washroom was the size of a broom closet.
That depends. Best for what?
It may be tight, but you should fit in an airplane seat if you wear size 22 clothing.
It depends upon the model of the airplane. They are not all the same size.
The worlds stealthiest airplane would probably be the size of your moms pubes
Generally, this is a matter of individual preference. It is unlikely that one paper airplane design is the best at everything (range, speed, glide ratio, etc.). Many airplanes are claimed to be the best, but these claims are unsubstantiated.
The best brand for RC airplane parts are Blue LiPo, Gens Ace, Sky LiPo, A123 Systems, Exceed TX and FlySky Airplane/Heli TX. They were all reviewed as the best brands of RC airplane parts.