DualSense is the best right now IMO due to the features. If you don’t believe me, actually play Astro’s Playroom.
But I love the Steam Deck’s layout (so I guess I’d probably like the Steam Controller as well). A lot of that has to do with Steam Input being fucking awesome, but it’s also possible to get relatively good at using the touchpads as mouse, and the “touch right stick to enable gyro” is an awesome feature that has made FPS games playable on console for me.