Thank you for your replies.

Got a check to cz but mileage given for economy classes is a bit low (40% with some fares), delta seems to be quite better in mileage gaining.

I will mosty flight business for china internal flights and probably economy (some business?...I consider economy) for international flights.

I'm aiming to lounge access and priority check. Don't care much about baggage. Also upgrades should be a priority for international flights. Possibly the 2-3 economy trips I will do shanghai - genoa/pisa per year.
Award tickets are not a priority...will travel too much, wanna play Xbox when on holidays

Thanks guys