I dont see a need for the pro. You arent going to running a tuning shop out of your house or anything.
And like fosho said you can log the wideband thru the EGR, but I would say most of us never even do that because a quick glance at the WB is all you need to do. Making a custom pid and getting it to work correctly can take time which most don't care to spend lol.
I have the standard HPT and it works great for what I need.