I have a Jem Gold (which I leave at an all day Open Sew where I go twice a week) and a Jem Platinum which is my everyday home machine
They are both lightweight and I love both of them
If I could only have one, I'd get the Platinum as it has needle down function and, more important, does a scant 1/4".
I also have a Bernina which was always my workhorse and I still use it to machine quilt. It's 20+ yrs old and very heavy.