Hi OP, I'm 157cm so around 5'3. I have two M/L double flaps and tried on the jumbo in store - tbh, the jumbo didn't stand out for me, whereas the M/L was an easy choice
i am 5'4 and a half, and i prefer the medium flap bag because i like how it looks against my frame. I found the jumbo flap to be too heavy so i am saving for the 226 because i heard it is very lighweight and slightly larger then the medium flap. I do agree the medium flap does not hold much but i don't carry much things anyways