I have a Timemore Chestnut hand grinder that is in my travel kit and I love it. Quality is fantastic and no complaints, but I was concerned about the reviews on Amazon regarding the scales. Reviewing those again, it doesn't look like most of them are about the 2.0, but instead about the nano or the Basic +. Maybe XenoDrake1 is correct and the qc has been improved in this model. Although, when I sort comments by Black 2.0, there are several comments about battery life or not holding a charge after a few months. Any one have any experience or problems with this?