I have a very old Kenmore that belonged to my great grandmother, was passed onto my mother and passed on to me about 20 years ago. It's solid steel and weighs a ton but it's built into a nice cabinet that opens up into a table and it still works like a dream.
I recently purchased a very inexpensive- Walmart special- can't even think of the brand, I think it might be a Singer- to use out in my office at work when it's slow. It works fine for what I use it for but I still prefer my old Kenmore.