I think traditional licenses refer to MD1, MD2, etc whereas PLM Express is a bundle package. If I remember correctly from the last time I talked with my VAR the PLM Express was the best bang for the buck. Contact a CATIA reseller (in the United States) for the latest info and pricing: Adaptive Corporation, AscendBridge, Consensia, Global Vision Technology, Idex Solutions, Inceptra, Maven IT / PLM Hub, Mecanica Solutions, Persistent, Tata Technologies