I really prefer separate machines for separate activities. I frequently have my embroidery machine running while I am sewing something else. You can't do that with a combo machine. For quilting, I finally bought a sit down quilter, a Handiquilter Sweet 16. Yes, great quilters can do wonderful work on DSMs, but I can't :-) There is always a compromise in machines that do multiple things. Sometimes you just have to accept the compromise because of space or money, but I would really recommend at least looking at a separate embroidery machine.
Pam