Thanks, Wanda,
I made my decision to buy a 780, and picked it up this week. I had 2 hours of introduction with my dealer and feel good about doing what I want to do right now. After the holidays I'll go back to learn more and get started with embroidery. I didn't get the embroidery module with my 440, so this is all new to me.
Some reviewers had said there were tension issues with the 700 series, but in looking back, those were not current postings. I think whatever was wrong has been fixed by Bernina in the last two years.