My computer is acting up tonight, but I wanted to try to reply. I am partial to Janome machines. I have a Kenmore I bought in 1978 that was made by Janome, and I have a MC11000, MC4800, 1600p, Compulock 888 and Magnolia 7034D. The MC11000 is an embroidery/sewing and quilting machine. The MC4800 is a sewing machine - loaded with features (bought before they converted it to a quilting companion). I bought the 1600P to use on my quilting frame - does only straight stitch - but it does have a deeper throat (9").
What do you plan to do with your MC9500? I think the throat on it is about 7 1/2" and wouldn't do as well for a machine quilting frame. I have read where other quilters have used their smaller machine on a quilting frame, but you just have about a 4" area to sew before you have to roll the quilt. With a 9" throat, you have a larger area to sew. I am waiting to be able to buy at least a 13-17" machine so I won't have to roll my quilt so much.
Hope that helps!