@marusaky hi, and welcome to Sudonix
If you’re looking for a complete experience out of the box, then NodeBB is the obvious choice. Not only is it more complete without any plugins, it’s robust, extremely fast, and doesn’t rely on PHP or mySQL. Instead, it uses nodeJS and MongoDB. As mongoDB uses collections, it is way faster. nodeJS is also very lean and doesn’t need to be compiled and executed like PHP does when accessing a page.
This means that NodeBB is so much faster than Flarum and can also easily scale with native support for Redis. You can run NodeBB on an entry level VPS (see my donate page for referral links to Hetzner which will give you credit to spend) meaning that you won’t be forking out for an expensive setup (just ask @JAC) for an extremely fast experience.
NodeBB offers built in HSTS and full security headers support out of the box, and no matter how many plugins you add, the speed is never affected.
Lastly, I see a lot of complaints about a lack of themes for NodeBB. If you search this site, you’ll find the theme switcher which I wrote for @DownPW which will also feature in the next update for Sudonix. The great thing about this switcher is that r with a little imagination, you can switch colour themes and that setting is saved in the user’s browser session so reach time you visit the site, it’ll display the colour theme of your choice.
NodeBB uses a set of easily customisable templates for it’s themes, so with a little imagination, it’s easy to make your own.
Hope this helps.