Which silicone dildo has the least drag?

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Drag is primarily influenced by two factors: the surface finish and the stiffness of the silicone.

A stiffer silicone has less drag because it doesn't deform as much during thrusting. However, keep in mind that a softer silicone is often more comfortable.

The surface finish is the easiest thing to look for in choosing a dildo with minimal drag. The rule of thumb is the shinier the surface the less drag it will have.

I find that Lelo and Tantus silicone have the least drag. Fun Factory has the most.

I think Lelo Ella would be a good choice.