I like them both for each of their characteristic smokes. The PSD4 is the stronger in terms of flavor and boldness. The flavor development in the PSD4 is excellent, full and bold, and lends itself to aging. The PSP2 is a flavorful smoke and has great flavor development through out the entire smoke, but I wouold consider this a medium to full cigar where the PSD4 is a full/ full smoke. So it really depends on your personal preference. I think both have aging potential, but the PSD4 is my overall pick between the 2.