Since OneBag doesn't seem to do it's job very well in the deDE Client of WOW (occassional errors in bug-sack resulting in addon-malfunction - I think it has to do something with the updated German translation in one of the last updates), I ask myself if there is a comparable Ace2 Inventory Addon, which does it's job with all clients of WOW :)
This addon should not be a ressource-hog (a clean and simple interface and low memory consumption like OneBag would be very appreciated :) )
Bagnon is the closest to OneBag of those three since it does no sorting. It does, however, allow you to do a search in your bags to find what you are looking for. And, while it's not "Ace'd", it's a very good addon by a very good author.
I have been using MyBags ever since it was released, and still love it.
Since I do not like/need advanced bags organisation and the like, it is perfect for me... only showing all my bags in one (and bank of course).