I just did a demo on the Janome 9900, nice mid range machine that does both. I ended up buying the 8200 as a replacement for my 6600. My friend traded her 11000 and her 6600 for a 12000. Not that she regrets having the dream machine 12000 but she can only do one thing at a time.
If I did embroidery, which I do not, I personally would buy two separate machines.