"At one time Brother, Janome and Kenmore all shared the same manufacturer, that's why they are so similar and you can often interchange the feet. "
This is not true. While Kenmore machines have had several different manufacturers including Janome who makes them now, they have never been built by Brother. Brother and Janome are two separate companies, one has never been built by the other. Possible exception is sergers.
If you look at the Brother PE-150 embroidery machine, you can find that exact same machine under several different names. I own a Babylock 6 needle embroidery machine, which is exactly the same as the 6 needle Brother embroidery machine except the Babylock has a joined cursive alphabet and the Brother doesn't, that's what distinguishes one from the other. Same manufacturer, different features.
Babylock is Brothers' high end brand. Always has been.
Cari