Bernina is too expensive for me so bought a Viking and love it. It is several years old and no problems with it. Simple threading and drop in bobbin.
Also have a Baby Lock Jane which I find to be to complicated to thread and don't like the underneath bobbin, very out of date machine.
Also have a couple of cheap Brother machines that are great. My Brother embroidery machine is great except for just a small area of 4in for embroidery. Any larger and they get expensive.