I would go for the one that feels easiest to keep up with rather than the prettiest one, because the very structured baby books can end up feeling like homework when you are already exhausted.
What I found most useful was having space for a mix of things:
- milestone dates
- a few photos
- one or two lines about what they were like at that age
- tiny details you would otherwise forget, like favourite foods, funny habits, first words, or how they were sleeping
If you like writing, a simple journal can be better than a formal baby book because there is less pressure to fill every page properly. You can also tuck in cards, hospital bands, or little bits and pieces as you go.
One lovely thing, if you think you would actually do it, is to write a short dated note or letter every few months about who they are right now and what life feels like at this stage. That is often the bit that matters most later, because it captures your actual voice and not just the milestones.
If you do buy a proper book, I would look for one with plenty of blank space and no rigid timeline, so missing a month does not make you feel you have ruined it.