I'm lucky enough to have a pretty good memory for what I smoke. I also tend t take a lot of pictures for the what are you smoking and cigar P0RN sections of stogie chat as well. I'm also OCD about keeping every band of every cigar I smoke. I've only lost two and it still ticks me off knowing that:?
I happen to have a terrible memory, especially for things in foreign languages, and companies I am unfarmiliar with. So I take the band from a cigar I just smoked, and tape it in a book that I have, I write out a short over view of the smoke, then give it a Buy again, don't bother, or buy a box verdict, along with a 1-10 rate.
I like being able to see the band, because I'm a visual learner. This has worked out for me pretty well.