V-Flyer

At the moment we've got seats 23A and 23C selected on our return flight, which is on the upper level of the 747 - but 20H and 20K are now showing as available.

Out of those 2 options which is the better seats to go for?

Personally I would choose 20H&K, I love me a bulkhead seat. Nobody in front to recline into you and plenty of room for getting up and down. YMMV