Ang,
When I said Pro-E was cumbersome, I was talking more about the Unix-type interface. Even with the release of Wildfire, there are still a number of commands that use the old menu manager (many picks)( try clicking edit/setup). Also, the structure of pro-E is alot more in-depth than most of the other softwares. PTC has come along way and yes, the user interface is much easier than previous releases (heck I started on Ver 17), and it is getting better. But because of the capabilities of Pro-E (remember, its the benchmark software), there is a descent learning curve, but as Peglor stated, "a couple of months down the line you'll find that your speed with ProE will have increased dramatically".
I have been using Wildfire for about 1 month, and it is getting easier to use. Surfacing is too cool. and the MDX option (Mechanical Design eXtension) is unbeatable.
If you are doing machine design, you will need MDX, and the Behavioral Modeling modules.
Within the next releases, PTC is supposed to be integrating Mechanica into the MDX Module, which is pretty nice (I still prefer MSC Nastran).
Good Luck.