Honestly, it depends on the mood and the type of session. Leather has that raw, primal vibe — the smell, the texture, even the sound of it when it tightens just hits differently. There’s a psychological edge to it that silicone can't really replace.
That said, silicone gear is super practical, especially for messy play or scenes that involve a lot of fluid. It's also softer on the skin during longer sessions and way easier to clean afterward.
I’ve got both in my collection and I mix them depending on the play partner and intensity. But if I had to choose purely on feeling? Leather wins for the sensuality and presence it brings into the room.
What about you — does your choice depend more on comfort, ethics, aesthetics… or pure kink energy?