Not all new machines are plastic. They may have plastic COVERS to protect the electronics
Here are some pics of current
model Berninas on my service
The last 2 pics are of the Big Kahuna, the 830.
If you want to be blown away, google
for Bernina Series 8
BTW if you want an exceptionally powerful, cheap
machine for heavy work, look for a Viking Husqvqarna 6000 series, the 6400 6500 series is the best.
They have a low gear
which will give exceptional punching power.
The problem with most of them is they were sold as never needing oil! NOT!
As a result, a lot of them are in various states of seizing up.
If you can find one with all the knobs turning easily, buy it.
The ones with a RED body have needle up/down stops.