Creo.
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I learnt with Pro/E WF2. Lost touch. Came back to Creo.
Was intrigued by the new interface.
2 year back, went through the process of forcefully reinstalling WF2... Creating a virtual machine, restricting the VM to 4Gb RAM, Installing 32Bit XP in the virtual machine, then WF2...perused the interface, (my old workmate) modeled a bit but drawing environment was just hell No! Not really worth going back. Creo is neater.
I have made a GrabCAD user group for Pro/E users.
https://grabcad.com/groups/ptc-pro-engineer-users
Since Creo was never ported to Linux, so I still run Wildfire 2 on it. It wasn't easy to get it to run on a modern system!