1-AD is an oral prohormone. Orals usually have fairly low conversion rates.
One+ is 1-test, the hormone 1-AD converts to in the body (thus, in a sense, one step ahead) and 4-AD, applied transdermally. If you use the recipe BDC and curt2go came up with, you'll be getting much more absorbed, and the 4-AD will give aggression and strength much more than 1-AD. IMHO, 4-AD and 1-test is probably the most powerful legal weight gaining-stack around.