A day for Koikeya potato chips

Every year, August 23rd is Koikeya Day. Koikeya are a very popular brand of potato chips (crisps). You will find many varieties  of Koikeya potato chips, such as the one pictured, reviewed in the product review section of City-cost. 

Koikeya Potato Chips are made using only domestically grown, aka Japanese, potatoes. Moreover, they were the first potato chips to be successfully mass-produced in Japan. In addition, to ensure a stable supply of high-quality ingredients, Koikeya was the first company in Japan to contract potatoes grown in Hokkaido.

They have such a wide choice of flavors, I've yet to try them all. But I really like the ones I've tried, particularly the 'strong' range. Have you tried Koikeya potato chips? Which ones are your favorite?