Another thing is jumbo frame. No need to it.
Please can you explain in a little more detail, Finman? Were you refering to British Nationals or Langstroths, and why you say that.
The other alternative, which is bigger, is double brood. I don't particularly like double brood although I do operate a jumbo plus super at times, particularly the prolific ones in springtime.
The single box going through the winter has it's advantages in a small number of cases and doesn't require vast amounts of excess winter feed to fill the box(es).
Regards, RAB