I know people mean well when they respond to a post with "that's already been discussed", or "we have older threads on that", and that's the end of their post. But it would really benefit the OP and others reading if folks would limit their responses to actual information and their own experiences. If you must post that it's been talked about before, adding a link to the older thread would be of enormous help.
The reason is, I don't find the search feature here very helpful. (Especially if your search is more broad. Putting in Bernina 830 might get some specific responses, but I tried putting in just Bernina and came up with 40 pages of threads, many of which simply mentioned the word "bernina" in a single post within that thread. That's just too time consuming and often fruitless to sort through all of those to get at what you want.) Plus, some of us are new or haven't been around for awhile, or just plain missed the older threads on certain topics. So I for one really appreciate that even if a topic's been discussed before, it gets due attention when asked again or even gets linked to previous threads on the topic.