Ok, I'm not a resident expert on Dips, but I have smoked a ton of 3s, 4s, and 5s. Dips, in my experiences, are best smoked at 4 y/o getting too subtle older then (not that the flavors aren't excellent, it's just that I normally prefer a bit more robust smoke rather then a finely aged Havana in most cases) that and too muffled any younger then that. My first box of Cubans I ever had was a split on 4s that were 3 1/2 y/o and just blew my mind. They're like an on Montecristo that has a dry tobacco underlying flavor. Obviously mild, but sometimes I don't like having to munch down a meal before I light up.
Keep in mind because of their very recessive flavors (thinking dominant/recessive), your environment and smoking accompanyments (sp?) need to be very minimal. Think water with your cigar in an indoor room with minimal ventilation. With a drink as mild as coffee you can effect the flavor more then I think is best for these. The ironic thing is that I've never even smoked a Dip 2 despite loving the line as much as I do. So I guess all I'm saying applies to the parejo shaped versions of the marca only.
Cheers boys and don't give up on em yet!