For immediate smoking, either one will be fantastic. As noted before, when the PSD4 goes into the vacuum period (sickness) it's a pretty poor cigar. On the other side of that though, and it's a very good cigar.
I would also propose two others for your enjoyment. Since the BRC and PSD4 are not really similar in profile, perhaps you might want to try the Ramon Allones Specially Selected. These are a very tasty cigar young or with age. You might find these closer to the BRC than the PSD4 but not really like either.
Also, not really a robustos but a Hermosos No.4 (smidge longer and thinner) is the Vegas Robaina Famosos. Lately Strayvector has been tearing into these and he might be able to give you some guidance. I really like the VRs for their old school, rich tobacco flavor. Not too spicy, not too floral. Just gutsy Havana leaf.
Wilkey