Creo is anything but 'new and shiny' on the inside. It is Pro/E Wildifre with a new paint job on the outside. What version are you looking at Creo 2 or the just released 3.0? My experience with PTC CAD is wait 6-8 months after initial release, about 6-8 build releases, before attempting to put it in production. We are just getting ready to roll out Creo 2 M100, as earlier builds had problems in one area or another.
I worked for a company that switched from UG2V18 to Pro/E Wildfire1. We had 35 users, all of whom received 12 days minimum of training in Pro/E. That alone is an expense to consider. Took us 6 months of training classes to get everyone through the courses. Loss in productivity for another 6 months had to be factored into the work scheduling for jobs. Management was not happy with that loss and complained. Jobs had to be managed between the UG stuff and Wildfire stuff until everyone had been trained. We only used Wildfire on new products, so that saved us some problems, but common items that we had modeled over 18 years of UG all had to be remodeled in Wildfire. How do charge that time when the design has been in production for 5 years or more and you are modeling it just to use in an assembly? Drawings had to be managed when we did a redesign in Wildfire and move the 'master' over, which we did on some parts. The UG files had to be marked so the engineers knew that the master was in Wildfire now.
It was a corporate decision that forced the change on us. As a corporation, we had a balanced mix of UG and Pro/E seats, approaching 100 of each. We were the only division to make the change at that time. Another division was in the middle of a multi-million dollar expansion of UG and TeamCenter.
Good luck with the switch, if it happens.
"Wildfires are dangerous, hard to control, and economically catastrophic."
Ben Loosli