I would not buy either one. The Janome is too old. I have the Pfaff Ex. 4.0
Its a great machine, But my dealer has had to tweek the tension and the auto thread cutter. Now it working great.
So I dont know if I would buy it unless I could really try it out and make sure it sews without problems.
Esp. FMQ. That is were you will see things like skipped stitches and thread shreading. The thread shredding with this machine could be atiny burr, as that seems to have been a problem on the ones produced early on. But as I said mine is sewing great now. If you want to ask more questions, email me.