We compared the top 5 commercial embroidery machines from SWF, Tajima, Melco, Avancé and Brother. Learn what makes a machine "commercial", the differences between single head, multi head machines and the most important things to consider when starting your embroidery business, or expanding an existing custom t shirt business. For more detailed comparison information visit http://www.avance-emb.com/home/professional-embroidery-machine-comparison