I'm guessing from your title that you are thinking of exchanging it for the Artsy Gm or the Sofia Coppela bag (the one that sort of looks like a keepall?). Since you already have the Galliera, and aren't really in love with the Mono, I would definitely exchange it, I'd go for the Arsty Gm myself. I really like the bag, I think it is really a fun boho chic bag. I would be sure to try it on though, as some people have had problems with the handle. I haven't seen the Sofia Coppela IRL, only on the LV website so I can't really comment on that, but from the looks standpoint I like the artsy better! Good Luck with your decision!