As an advanced sewer myself, I've found that the Juki TL-2000Qi, Brother Innov-ís NS1750D, and the Janome 9450 QCP are among the top sewing machines in the market. They offer advanced features such as automatic thread cutting, customizable sewing speed, and numerous stitch options. Each machine caters to different preferences and styles, so it's essential to consider your specific needs when choosing one.