Apple Pencil? Pencil Pro?

I’m just entering the SU for iPad world. (I am used to SU on desktop.) I have some questions about the Apple Pencil.
– I have the choice of getting Apple Pencil or Pencil Pro. What can Pro do in SketchUp that the other can’t?
– Is it worth spending extra to get Pencil Pro and the higher iPad needed to use it?
– Do I need the Pencil or does finger work fine?
– Is “Pencil Pro” the same as “Pencil 2nd Generation”?

Not really using SU with iPad, but using my apple pen 2nd gen. for notes and planning.

My guess, SU without a pen is a pain in the… fingers.

Different pen, different compatibility → Apple Pencil compatibility - Apple Support
Pro have more features than 2nd gen.