After using Schaller Tuners for a little over a year I started using these Der Jung Machines. I was selling my guitars for a price at that time that certainly didn't warrant a machine set that was at or over $100, and Der Jung tuners work very well compared to other sets in their price range. I ended up placing a large order for machines that had bearings on the end of the alloy string rollers and I used them on my guitars for more than 3 years. Overall the sets with the higher gear ratio perform at the same level as premium Gotoh tuners and almost as well as tuning machines over $300 USD. The brass gears of the Der Jungs will wear more quickly than pricier brands that use bronze, but as long as the worm / gear alignment is in good shape, the machines will perform great for many years.
