First of all, thank you for the numerous contributions, but immediately after that comes a "sigh" from me! I’m really not making much progress...
The mind says V & B because it looks good visually, offers a good compromise with the open rim, and as a bonus has an integrated filling basket.
The heart says Geberit Icon, it looks very good visually, would fit perfectly with our cistern and button (Geberit), but unfortunately I don’t dare to go for the completely "rimless" model, as you read here and there that it isn’t splash-free.
I somehow have no opinion about Duravit, unfortunately.
It doesn’t help, we will still visit at least 1-2 bathroom galleries and hope that the mentioned models are on display to hopefully get a final impression and maybe even get an expert opinion on site as a bonus.
Regarding Softclose: We have been using it without problems for years and it is therefore practically a given.
Can one perhaps say that, all in all, more or less all three can be recommended?