I had to get a new Vakumiergerät because there were no more bags to buy for my purchased at a discount store unit. Because of the good reviews here, my choice fell on the Caso also because the company itself is a manufacturer of bags. And I have not regretted it. Very good welding and Vakumiereigenschaften draw the device off if you use the manufacturer's recommended bags. Bags of other manufacturers can not or only insufficiently be welded which for me however, is not an obstacle. Operation is simple and logical, but the engagement to the vacuum nozzle I find not optimally solved. The automatic works so far I can not understand the reliability problems outlined here. For me, a strong buy recommendation!