I'm planning a trip to Tokyo, and was thinking to fly with CX instead of JAL.
Am also still thinking whether I should buy the ticket in economy (which works out at £350) or take out a reward flight via BAEC (I really wanted to try one way in business), but use as least points as possible by paying more taxes, and eventually buying the rest of points. As I need to save as many avios points possible to use in a future 2-4-1

Just wondering if anybody can give me an idea which planes are used, and if I take a reward flight in business class, which is the flight where they use the reverse herringbone seats? Is it worth spending it for the experience?

I saw that buying a business class flight is very expensive, so that was out of the question, what are the chance of upgrades?