any machine with a nice even straight stitch and feed dogs that will drop works just fine for quilting your own- you do not need alot of bells & whistles- a walking foot for stitch in the ditch and a hopping (free motion) foot for free motion quilting.
i have a 10 year old viking and am presently quilting a queen size quilt on it. i do have a long arm but sometimes i do use my domestic- especially for alot of detail- i've quilted a couple small quilts (twins) on my 1956 singer straight stitch machine.