Noctalia will soon release v5, which is a complete rewrite in C++, which makes it even more appealing if you care about the performance.
Noctalia | welterweight | fast | professional look, GUI configurable
Waybar | lightweight | fast | minimal, DIY theming, hand configured
swaybar | flyweight | blazingly fast | ultra minimalist, hand configured
Noctalia uses about 70MB more RAM, and a little more CPU than Waybar. No brainer.