The deepest history of the three, with two-of-three multisig, a reputation record that survives rotation, and a dispute desk that closes on time.
Two-of-three multisig escrow. Two-factor sign-in. Rotating mirrors. Monero by default. Persistent vendor reputation. Tracked dispute arbitration.
Copy the first address by default. Move to a backup only if the challenge layer stalls on your circuit; all of them resolve to the same market behind the rotation. The clipboard receives the exact http://...onion string regardless of the line shown, so verify it once and trust your copy.