I really like my Elna 8000 -- the feed dogs feed really well, the stitch quality is fine, and I don't really use the built in embroidery stitches so that's not an issue. But I've had a few little glitches with that machine over the years, and the buttonhole is crummy. I finaly resorted to a $10 plastic buttonhole foot and do them manually -- and still, there will be one that's fractious. So I'm really happy to have found this machine and gosh, if I just use it for buttonholes, I'll be happy.
The thing with my Elna is 1) it does have needle down, but it goes 2 stitches ahead before it stops. 2) sometimes when I drop the feed dogs it's almost impossible to get them back up again, which of course makes me reluctant to drop them in the first place. 3) when I first turn it on, sometimes it doesn't run at all, and I have to turn it off and on again (like rebooting). 4) The satin stitch has never really worked properly.
The other problem is they no longer make them, so if the motherboard goes or something like that, the machine is kaput. I've used it a lot over the years and will continue to use it, but a good mechanical machine is like gold. You can always fix them and they are so reliable and what they do, they do well. And it's in a cabinet!