Diagnostic Test when I've already used PP1

Basically, I am a week into the 1 month study plan and about ready for a diagnostic test, but I already used the PP1 for a class. Is there a recommendation on what to do as a diagnostic here? I want a fresh diagnostic since it’s been a few months since I took the PP1 and want a new sort-of “baseline score.” I know the PP2 isn’t bad but some say is less reliable than the PP1 and that the PP+ tests are good but may not be worth the money for a diagnostic. Any tips would be super appreciated!

If money isn’t an issue : take PP2 as diagnostic and give any of PPP instead of PP2 at the end ! otherwise can just re-take PP1 as diagnostic and move on from there!