A perfect model jet doesn´t exist, like anything made by man.
There are just a bunch of good models.. what makes them "perfect" for each one of us depends on what characteristic we consider important. The funny thing is that sometimes what we consider important is not what we need!
IMO the closer thing to a "perfect" jet is the one that you would like to fly a lot of times. And this can be a baby Boomerang, a Kangaroo or a tomahawk L-39.
Enrique