I learned and practiced and practiced on the 8 oz JJ. As soon as I thought I had them mastered I moved on, to different jars. But with the price of everything else, they make the most sense economically. Any thoughts on whether people really care what the containter is as long as the product makes the air smell good? Im having a hell of a time deciding what to order. We are having a wet week here in Kansas. Have a good weekend. Natalie