I've been inspired by the recent exchanges on Kuhn-Rikon
and Lorna Sass to go get myself a pressure cooker.

I'll normally be cooking small quantities, but sometimes I'll
cook large batches. Is there any disadvantage to getting
a large (7 or 8 L) PC, other than the fact it's slightly
more expensive than a smaller one and takes up more space?

In essence, is it more difficult or liable to produce inferior results
if I use a large PC to cook small quantities?

Thanks