Well maybe Oreck owners in the U.S do, Oreck bags in the UK are largely expensive because of the dollar rate and as such most owners use the bags as far as possible. I can't count the many times I've had to unclog an Oreck because of some owners. Sebo bags are 3.5 litre capacity, not so big and smaller than their X uprights at 5.5 litres
I do change ORECK and all vacuum bags more frequently than needed and always before the full line. At 8 bags of ORECK CC per pack for $12, it's inexpensive for me to replace more often than required.
Carmine D.