Hard to say what was the best or my favorite especially if I am including ones I have sampled in PPPs. However a couple stand out
Almost every cigar from this bomb in '07 (thanks Twillis) but especially the '83 ERdM PL
40s Cabana thanks to Balls
And an 02 RA 898, though I think this one was less to do with the cigar and more with the location and the company.
Many more spring to mind though they are almost all tied to a good herfing experience so I often wonder how good they were or was I just in that good a mood.