What about the alma bb mono but also buy the mono adjustable strap? I love the alma bb but I dislike the strap length. I love the mono strap in general too. Or I would do Pochette Metis but in Monogram. I like the reverse a lot but I don't know if it feels as timeless as the Monogram to me. It's such a hard decision but I think you can't go wrong with any of them.
My husband surprised me with the empreinte noir version of the Pochette Metis recently so I'm still super excited about that bag. I had never considered it before but had seen it while traveling in Europe many years ago. Recently I tried it on in store and fell in love with it. I carry very few things but this fits all my essentials and a few extra things if I want to. I want to get a twilly/bandeau to attach the strap at some point. I love the Monogram PM with the bandeau too. sooo cute!
If I were to do a speedy it would be the B25. I love the way it looks handheld but it's nice to have the strap. I do wish it was a tad smaller but not as small as the nano...
I prefer bags that close so I wouldn't choose montaigne or neonoe. Although I think they are both very pretty too. I've heard people think the neonoe closes well but it would just always bother me.