IN NO UNCERTAIN WORDS .... ABSOLUTELY YES They are excellent machines. Minimal electronics and no computers.
My wife has one that was my late cousins. From 2000 till last year my wife beat the crap out of it with no servicing, no cleaning, nothing. And it never missed a beat. I cleaned and lubed it and it's running much better, but still sews the same.
Great machines, if you have a chance to get one for a reasonable price do it.
The only thing is, parts are a pain to find and most Bernina shops will try their livin level best to sell you a new one rather than work on the old one.
Joe