I used OneBag when it was fresh (switched from non-Ace'd MyInventory/MyBank), switched to MyBags because I liked to see bank/inv of my alts, and finally switched to Bagnon because... for some reason I just like it more than MyBags ;-)
bagnon here too. the frame "jumping" off the edge of the screen tho is annoying - author did this on purpose tho so ppl couldnt lose the frame. i asked him to give a toggle for it and think he's thinking about it :P
using kcitems + bagnon_kc plugin so i can view alt inventory&bank data too. it pwns.