I'm looking into another cycle later, and Test P is an option.

I've run Test E, so I don't know if I want to try Test P.

What would be the real differences? I know that I'd have to pin more often (I've done ED pinning for a good 8 weeks with another substance, so I can manage), but would there be any advantages over Test E?

I can get the Test E cheaper, and I'm leaning to just running it again, but Test P just seems to be more popular for some reason.