I recently sold my DA. While I loved it, it did not hold up well to regular use. The corners were wearing off, had a bit of color transfer and the area where the chain came out of the cles had turned the fabric of the zipper area black. I know that DA is a little higher maintenance than other patterns so I wasn't upset about it. I just used it till I decided I was done with it. TBH, I'll probablly buy another one if I can find one.
My mono one is my oldest and other than the chain/clasp needing to be replaced, it's held up really well. I haven't had my DE one for that long.
If you can get your hands on one you should. It's is probably my most used piece and the perfect size!