You could make this calculation (very round numbers)

69 Tokens = 75 Greens
75 greens = 75x1.2 skillpoint = 90 skillpoints (fasttrainer)

You can make an ordinary 5 star fasttrainer very good for that much tokens, and if hes 18 he will continue developing, an 22 yeared has already halved his learning curve (over the hill)
So in my oppinion Nordgens is best value for money/tokens