BR390 ACE is by far the best bag I've ever owned. It is just a tad smaller than standard 9 racket bags, but the quality is one of the best I've seen and the straps/handles are really well padded (which is nice considering my bags never weight less than like 30 pounds.
I just bought this very nice backpack for badminton to keep my racket and shoe > http://item.taobao.com/item.htm?spm=a230r.1.0.0.ZB55RD&id=13991366082
Just got a BR390ACE, bag is very nice, slightly less roomy than my previous yonex one but the extra compartment is welcome in keeping things more separates and organised. Love the main padded handle and the show access from the top. One thing that I'm still getting used to is the straps going around the bottom of the bag, so I always end up putting the bag down upside down