Of the ones you listed, I love the Antigona and the Prada. You didn't mention which Prada saffy and that may make a difference in staying power.
I own a black Prada saffy dome / bauletto style and LOVE it. It's classic, I can wear it casually or professionally and it's as no maintenance as a bag can get. It's not as common as the Prada double zips (which I also own 2 of and love) so I think it will have more staying power. I bought these bags knowing they may not have the staying power of some brands like Chanel because I love them so much. I'm willing to take the hit.
I love the Antigona! I bought and returned a mini only because it wasn't what I needed in the color I ordered but they are great bags. I'm not crazy about the stiffness of the opening but I think I'm alone on that point. I do worry about the extended gussets looking dated in a few years.
I have 3 Gucci Sohos. A mini disco, a small shoulder and a tote. I LOVE these bags but had problems with the shoulder straps on 2 of them which Gucci repaired but still...? 😕 I haven't had to have any other bags repaired ever, so despite my love for Sohos, I'll never buy or recommend them again.
Have you considered the Saint Lauren Sac du Jour? The bags are well made, beautiful and classically designed which makes me think they will last quite a while before seeming dated. This bag is on my radar screen as one of my next to buy. My only issue is I hear they are heavy which may not be an issue if you choose one of the smaller bags.
Post a pic of whatever you choose to buy so we can celebrate with you!