Plus 3 and pro form light are both light weight compounds.
Easy sand setting is also a light weight compound.
There really is no difference in how hard the dry finish is.
Dura bond dries harder but I would not skim with it, it does not sand very easy.
I would not worry as long as the total thickness of the skims are not more than a 1/4 of an inch thick.
I prefer pro form light because for me it is easier to tool, but it all comes down to personal preference.
Hire a trusted contractor and trust his judgement he does it everyday and knows what works best for him.
Remember it is just drywall you have to be careful or it will nick.