I bought the first version of Baby Lock Jazz. I traded it in for a computerized sewing machine because of the following reasons: it didn't have an automatic up-down needle position. When quilting, the needle should be down so you don't lose your place; too noisy!; too heavy to lift and put on top of any table.
I kept my Janome 1600P which is a powerful straight-stitch only machine. I use it to sew bags and heavy fabric. I had a quilting frame for it, which is great if the design is only 7inches or less. But I use primarily for straight sewing. It's over 10 years old and still hums like new.