When it comes to doing anything interesting with double walled, zwilling really is the only player, and I couldn't be happier with the result. The insulation factor is amazing, hot stays hot, cold stays cold, and there hardly is any need for a handle. The carafe itself is solid, as are the cups. If there was one improvement I could make, the end of the press has an imperfection in the coil, but after using it, it seems to only be cosmetic.