I've had my 870 for about 18 months now. I bought it from a friend who decided she didn't like it after about 6 months. She only used it a handful of times.
I love my machine! I'm still having issues with tension when I try to quilt a large quilt. For some reason no matter what I try, I still tend to get some eyelashes on the back. I just need to keep trying though.....
Thanks for starting this thread, I will definitely be keeping my eye on it!