I very occasionally buy the larger packs, too - although I feel grumpy as I do so, on the principle of the thing - but I'm still in diet mode at the moment, losing the *guilty look* 7 pounds I put on between my birthday and New Year, so while I could justify 169 calories for crisps (up 2 hours early, brisk walk to ferry etc. etc.) in this case, I couldn't justify the bigger pack. Shame. :-(