There lots of systems that PnP RPGs use for action resolution and character creation/progression. Some are systems unique to a setting/IP, while others are more universal.
Which that you have played are your favorites? Feel free to offer different systems for different types of game. For example you might love the way a setting-specific system runs but feel a different is better when adopted for various settings. Some systems work well for the feel and flow of one game but would be awkard in others, after all.
I am just wondering which systems you have found to flow really well and provide substance and/or get out of the way just enough to be useful. Really there is only one metric: the rules feel good.
I have played and run lots of different ones. I quite like the Cypher System as a universal system since it’s so easy to mangle and adapt, plus fast. Vanilla is problematic for a few reasons, but the fixes for this were easy and encouraged by the rules themselves.
D&D 5E is my favorite edition yet, but that’s just for D&D . Lots of fun and runs great.
Shadowrun 5E is far more granular and crunchy than I normally care for, but somehow it works for the setting. My biggest gripe here is how much of a slog the Matrix can be for Deckers/Technomancers.
What about y’all, players and GMs?