We have recently purchased the Pads PowerPCB 500 system to replace the PCAD system we have been using for the last ten years. Our serch for a new system included was quickly narrowed down to PowerPCB, TangoPRO, and Intergraph's VeriBest. Then Pads system is much more powerful and even more user-friendly than TangoPRO, although the full-blown PowerPCB 500 system is is about $10K to $15K more. The Pads and Intergraph were very close in power, with the Pads being a little more easy to use. The Intergraph is probably the more powerful of the two systems though. Intergraph was about $30K at the time and our PowerPCB 500 is running for about $17K (we paid $9K). Based on the price and performance, and ease of use, PowerPCB seems to be the way to go. I would love to hear other people's opinions too.