I like both. They each have their advantages.

Dynamic is easier to fit to morphs and even other figures. (I recently used a Kids 4 dynamic outfit on M4, just by scaling it up and letting it drape around M4.)

Conforming is easier, and easier to modify with transmaps. You can use transmaps on dynamic clothing, but it often looks weird, since the item will drape as if the hidden part is still there.

I also dislike the way the edges of dynamic clothes look. They don't look natural, since most real clothing has hems on edges. Some vendors do make dynamic items with thickness, or texture them so they look like they have thickness.