Generallt, I think having a light colored bag is a good idea. It's great for summer and it's nice in colder weather too--just a winter whit-ish kind of look.
In this instance, however, I suggest returning both. Neither is wowing you (or you've got concerns about eaither even though you like it) and you've already indicated you only want to keep one (so you're not attached to either). At that price point, you should be tickled with happiness over your latest purchase and it doesn't appear you are.
ETA: And you've even indicated that saying neither is OK so...