Went to the official reseller. The 554D is very quiet and there’s no noticeable vibration even on full speed. Overall structure felt very sturdy. The machine is compact and easy to carry. Feeding different fabrics with multiple layers was smooth. The new feet and positioning of the knife made it easy to thread the machine as well as see the sewing line. Thread guides on top of the machine are nice so there’s no need to reach for the back of the machine as opposed to the previous serger.

In the end went with the 554D. 654D wasn’t available. It would have had a metal base plate in the machine body.

So far been happy with the machine with today’s sewing! 🥳