If you are looking for an alternative for the Portable F the NLI Newlong NP7A is the alternative machine.
Robust quality from japan. The results of the machine are the same as from the Fischbein, a single stitch formation of the seam. The newlong NP-7A can easily run for years without any incidents. In our shop on a regular bases we get used machines that are over 20 years old where the core of the machine still runs without problem (meaning, it still makes a perfect stitch) replacing some outside damage covers and go.
The NLI Newlong NP-7A also has a nice price compared to a Fischbein Model F. The reason is that we buy this machine in bulk. Contact us now