Hi, I shoot Kodachrome 64 and buy the select version with the common assumption that the price difference reflects only slight differences, and that the Select version has a longer shelf life. I've been having a lot of K-14 films processed lately. Now, maybe I'm crazy, but I swear the films that I worried most about, the ones shot six months or a year ago, often without refrigeration, or those having spent months in a hot backpack look better than the fresh shot stuff. Wether it's all in my head or not, this does bring me to consider a side by side test of KR and PKR. Maybe the PKR really is better straight out of the fridge and the Select needs to ripen a bit. I think I'll head out and pick up my first ever roll of PKR and find out.