I don't. I have a roll of lead-free that works OK, but I got it so long ago that I don't know. I think it's an off-brand that doesn't even have a name on it, or the sticker peeled off. It's still more temperature sensitive than lead, but not bad. I think my better quality lead roll is from them too. I wish I knew the name so I could order more of each.

On a related note, I've had terrible luck with any of the Chinese solders off of places like Temu or Banggood. Even the lead ones were junky.