PSD 4/5/6

[multi-useless]

Question about the Partagas Serie D lineup - I've smoked the PSD4 a few times now, recently had my first PSD5 and it was similar, but different enough to make me wonder - is the PSD 4, 5, and 6 the same blend in a different length?  Are the differences I experienced due to length, or do they use a different blend, or is it a matter of factory and date differences? 

[Puros Y Vino]

They are definitely different blends to my palate. I've had many 4's and they are on the full bodied/strong side.  The 5 & 6 are on the medium bodied side but no less tasty.  I just don't have many of them.  Within each marca, there are some trademark traits within their lineup.  You see that with RA a lot,HdM ,  Cohiba and Partagas.  There is a core set of flavour(s) and then deviations within each cigar.