So can somebody educate me on the 6 racket bags made by Yonex, the differences between them, and which ones can be worn like a backpack?
you will find in the yonex website the latest models available - pro, tournament & performance series with different sizes and colors: http://www.yonex.com/badminton/bag/pro.html http://www.yonex.com/badminton/bag/tournament.html http://www.yonex.com/badminton/bag/performance.html
most of the newer series (2007 onwards?) come as backpacks. convenient to carry. these are for the 6 and 9 racket bag versions. 3 racket versions don't come as backpack. usually, each compartment hold 3 rackets, then there are 2 external compartments for accessories, and an additional compartment for shoes. Yonex also usually has a picture guide to a bag's features. http://shuttle-house.com/PAGE_top_ENGLISH/MAIL_ORDER/Meker_Catalog/08_YONEX/08_YONEX_9.html
Pro bags tend to be larger and are designed with long-distace travel in mind. Think of these as badminton suit-cases. The Tournament bags tend to be slightly smaller. Thinks of these as badminton carry-on bags. Be careful when buying, as some bags are designed for tennis rackets; one that i bought was to short for badminton rackets, and i had to take it back.