Thank you.
So, I'll choose Pocketbook 902, because I think touchscreen and taking notes is not that important that you pay more money for it.
If I don't buy one, I'll wait until new color e-ink readers come to market. Pocketbook also may introduce a pearl device then!
But for now, my goal will be Pocketbook 902.
Thanks to all guys for helping me in this decision, specially Billi, for his patient and kindness.