let me just Clarify something, I've been involved in the Control Industry for almost 15 years, I have many various Allen Bradley Certifications, ("Regrettably")I've been involved in many projects involving serial Connections,and anyone("customers -vendors") that hasn't been in or knowledgeable about Ethernet control really doesn't understand what is better, so your saying u can sell a customer a pentium II PC and run there scada and sell it to them for $2,000 (absolute Insane thinking) we do updated control systems, 95% of our projects involve ripping out 30 year old serial and relay controlled plc's and replacing it with (" Current to-date ") Control, grab some trade magazines, read