Don't know about the 6300 but I have the 6600, bought it last year. I know many quilters who have it & love it (& the 6500) If you can, I'd recommend spending a little more and get the 6600 for the thread cutter and dual feed sewing. Janomes are workhorse machines, and I'm much happier with the 6600 than my previous finicky Pfaff machine. Test drive all the ones you can - take cotton fabrics to try piecing and some small quilt sandwiches if you machine quilt :)