Compared to the Elna, the BabyLock seems very low tech, but looks can be deceiving.
My 17+ year old Elna:
The pretty new BabyLock (photo from BL site):
The cover stitch on the BabyLock is beautiful. I love that there are 2 widths, though I've had some trouble with the wider one tunneling on light fabrics. I just used the narrower one to apply elastic on a peasant top. So much easier and faster than sewing a casing with a regular sewing machine! I was able to sew the entire top on my BabyLock, and the air threading makes switching between overlock and cover stitch even easier.
This is closeup of both the right and wrong side:
...and the finished top, dyed: