which one is better SW/PRO-E/INVENTOR
The one you are good at.
But as per ease of operation SolidWorks and Inventor are on the par whereas Pro Engineer doesn't stand chance. Right now more than 50% market is using these softwares and the cost of Solidworks is very less as well as the learning resources are readily available.
If you just want to know which is better..pro-e is the best.
but..... is expensive the rest is almost the same but depend on what you want to know just draft , design, modeling, surface etc. there are many many.. things
that you have to consider, I have been working with all those program..for along 15 years