I have owned about 7 Berninas. I started with the 1020 which is the last of the mechanicals just before the computerized ones. I loved the 1020 as it had needle up/down and seemed to sew no matter what the weather or kind of thread I had. My rag rug business was booming and I would have employees sewing the ends of the fabric together.
Then I bought one of the cheaper computerized models when they came out. I returned it, I hated that machine so much. I went back to ebay and began buying more 1020's.
The business sold with all the machines except for one which I still have. Since I was not a good sewing machine mother, I would ride them hard and put them away wet. (Horse llingo) This last machine has had a new hook, and recently spent some time at a shop. I think it it trying to wear out.
So the bottom line is that the older machines are good ones, but I could never get along with the computers.