If you ever want to seed save I have found Newburg is a great open pollinated substitute.
Discussion
Thanks! I did try saving onion seeds one year, but I don't remember what variety they were. The resulting performance of the seeds was very underwhelming so I didn't continue in that direction. I'll look into growing some Newburg onions next year and perhaps try saving seeds again.
I think the you need at least 100 plants to save seed