Hi,
I have a Janome 1600P and it's a great machine, I'd say it was the best I've ever owned. I use it for sewing children's clothing and for quilt piecing and machine quilting (though I'm a hand quilter by preference). They are not inexpensive but I'd buy a used one in a heartbeat. I love the wide working space it provides and the stitches are beautiful.
Steer clear of my previous machine, the Singer quantum futura sewing/embroidery machine, you spend more time clenaing it and fixing it and setting it up again than you ever do using it. I always had Singers before that, and it really put me off of them. Even the dealer that sold it to me new the year before wouldn't take it as a trade in on a different machine-- that's how much trouble they are.
Best of luck! You sound like a keeper.