Key moves and advanced codes are much more efficient than learning. On the 1055 you have about 2050 bytes of learning memory and 500 bytes of keymove/EFC memory which are separate. One typical learned command could take 25 bytes or more depending on complexity. One key move or EFC takes only 7 bytes typically, for a total of about 70 keymoves/EFCs.

However the most efficient use of space of all is the 1020 bytes of device upgrade memory. If you get a JP1 cable, you can load entire devices into this area. Each device upgrade only takes about 50 bytes, which works out to about 1 byte per key.