I love my Juki MO1000, had it for a couple of years now and would only consider moving up for a machine with needle up/down.
It has air threading and, although that wasn't a big item on my list of requirements, it's quick and easy to use. I've never been one for pulling threads through so I've never tried to avoid threading with any of my machines. The build quality is great and, if I do look to change it at some point, Juki will be the first I try. One thing I especially like about Juki is they include all the important safety features (such as cut-outs when doors are open) on all their models, not just the more expensive ones like Bernina do.