Best HTML GUI theme for running Personas?

Hi,

We are hoping to use Personas via SAP GUI HTML on desktop and there are a number of themes the users could use.

The default theme for our system is blue crystal, but I don't like it for Personas. A better theme is 'Belize' which I add into the URL via '&sap-theme=sap_belize' and this seems to offer a nicer UI for the user.
Unfortunately I noticed that Personas screens aren't formatted/rendered the same across different themes so whichever theme we choose we'll need to stick with for Personas developments.

Therefore, I am wondering if there are any recommendations on which SAP GUI HTML theme we should use, or which theme offers the best UX for users - would it be the new Horizon theme?

Any advice or thoughts would be appreciated.

Thank you in advance.