Hey Donnie D,
Well the closest I would come to a FP heli of that size would be maybe a Falcon 40 (not sure if that is 400/450 size or not). Since I live in Colorado (rather windy here, few really calm days), all I've read about FP heli's is that they don't handle the wind well. Same as for like a coax heli.
Related to that, I though the CP Pro I got was a good investment, now I'm not so sure in that from what I'm hearing may be easier to learn with the Blue Ray first, then play with the CP Pro. And the upgrades to give it a nice frame, CNC, etc... cost as much as the heli does to begin with, lol.
In the 600 range, I don't see it. If your really going to spend that kind of money to learn how to fly, I don't see folks looking for a limited performance heli. Now if they made one cheap (not brushless) but like a Falcon 40 only 600 size, lol... I still think for the price, most would look for an inexpensive way to start.
Don't pay attention to what I have, I'm just a loon. Intersting topic though.
Tristar