There is no doubt that having the same PDM and CAD by the same company is the way to go. But, We priced Windchill and they told us to implement would take 5 to 6 weeks and cost around $360,000.00. We already had Teamcenter and have not spent near that much. I agree with looslib in that you cannot compare teamcenter with intralink. Intralink is very low end PDM. We had it for awhile when we purchased another company and dumped it as soon as we could export all of the data out of it. It is a cheap way to get into PDM and is not that bad but does not hold a candle to Teamcenter. Once you have had a high end PDM it is hard to go back wards to a low end. If you can afford Winchill I would highly suggest it is you are going to ProE. If you stay with Catia go with Teamcenter. It works really well. Been using it for 7 years now.