The marked takes a turn now and them, but I think the basics are rather stable. Technology and models develp slowly, ad it takes about a decade before something new to turn up.
Is it the 730 Record you mean Lyn? At the time I think Bernina probably had the repuation for having the most userfriendly machines with best stitch quality. They were portable machine, sturdy, dependable that weighed less than the older machines. They acutally had this since 1945, gradualy adding improvment along the way. I wonder when they sailed up as such a favorite`I think it was around the turn of 1960. Of course, they were not alone on the marked to make nice machines then either, but a they had a combination of features that turned out a success.
The top range Berninas are rather expensive these days, maybe more so than the mechanical machines ever were. They never were bargain priced machines. I don't know all the models and makes these days, but so far I still consider Bernina of the better ones. I can't think of anyone actually out doing them. I just don't do the type of sewing worth investing that much in a brand new machine. I might have worked a bit more in the computerised direction if I found an advantage in them. I like them though. Another thing is I like the old machines I found, and I don't what to place either of them idle on a shelf. They do the jobs I need them for just as quickly and as nice.
In my town there are many fast food places insisting they have the best kebab in town, the best sushi, etc. We just have to try to see if we agree lol