Looking at booking CW awards for July 2018. Both LGW-OAK (777) and LHR-SJC (787) are available for booking. Based on this thread, the LGW 777s seem to be long in the tooth, but there may be refurbs next year. Just in terms of the difference in the seat, and to play it safe in view of possible aircraft swaps, am I better off going with the 787?