Any product which has the potential to mediate Test Production also carries with it the potential of aggravating a previously held gyno condition. With that being said, I have not seen many reports, if any, of PFull doing as such.
As to the question of which would raise libido more, that is hard to say as libido is a very subjective thing. I can vouch personally for PFull's ability to raise my ability, and would definitely personally suggest it in PCT as I have used it for that purpose.
I would also suggest stacking ActivaTE and PFull as they work through synergistic pathways.