Interesting topic.
I owned a 930 Bernina during a year a few years ago. I had bought it 50 € in Switzerland, so it was worth. I loved it. But I apply to the opinion that it was not a semi industrial machine, just a very heavy and solid domestic one.
Unfortunately, the motor finally crashed (this is their fragility, the metal pieces hold, but after a 40 yers service, well, the motor has issues).
Thus I searched a new one.
I finally chose 2 new ones : one I call semi industrial or professional for straight stitch, and one domestic for zz and stretch stitches.
Talking about the semi industrial one, this is a Juki TL series. I am not afraid to call it semi industrial due mainly to its characteristics whose some are implemented from industrial series. This is not an industrial one, of course, its speed is 1500 / min only, but for the rest, it is quite comparable.