I would like to hear opinions on vapor pressure vs freezing point osmometers. I have previously only used the vapor pressure ones, but am considering purchasing the Knauer Freezing Point Osmometer (https://www.knauer.net/en/Systems-Solutions/Osmometry). Has anyone used this machine? Do you find it user friendly and reliable? How high or low maintenance is it? Does it often 'crash' or fail to work, or is it stable and consistent? Thanks!