I bought a b30 preloved as my first Hermes quota bag. It's a wonderful size, but really quite heavy for me to lug around as a casual every day bag. Maybe it's the 7rp insert.... that thing is thick! Is the weight ever an issue for you?
I don't really carry that much (cosmetic bag, wallet, phone and keys) and I use a very lightweight insert, so the weight hasn't been an issue for me. I'm petite and don't like using a handheld bag for when I need to carry a lot of stuff, so I get it. When I do need to bring along more, I use a shoulder tote.