I went with amateurs because that's what they all are until they are discovered or whatever......Guarantee you go to any major city and actually convince some chick who was hot to get her kit off for the camera......A little clever internet viral marketing.....voilà
Pornstars, because:
I like big boobs
Porn business luckily still contains many not so skinny women, whereas in the other business women seems to get slimmer every time
pornstars are barely or not dressed at all