[QUOTE
If you do the RTW, ask yourself if you would like to visit LHR or FRA. If LHR then ask yourself if you want to visit SIN, BKK, or HKG. If FRA then ask yourself if you want to visit SIN, PVG, NRT, or BKK.QUOTE]

Thanks very much for yo help!!! Well, I would like to visit UK as well but I don't really have enough time for this trip, maybe next year. At the same time no plan to go to Asia this year. It would be great if I can fly to Canada with NZ as they have the non-stop flight. It would be great to use AC's upgrade vouchers just to add a bit comfort to this trip. I will find out if I'm allowed to use the vouchers on AC's codeshare flights. I didn't realise US is big and it takes time lol