Much like most have stated, I usually try to get a few singles of cigars first before I commit to a box. Though there have been a few that Ive stated on the first few puffs, that a box will be bought and soon. This just happened to me again this past weekend on the 4th. I had an Illusion ~2~, the torp, and as soon as I lit it, those words rolled off my tongue. Which surprised me, as I usually dont like torps that much, adn the 2 impressed me more than the 88 did. But I will be getting a box of them soon. Same thing happened with Tat Havana VI's, Cabaiguan Guapos, and Panaceas.
On the same hand, I have bought some blind boxes, usually less expensive ones that I know I wont be able to get singles of any time soon. Such as Fumadores, Sancho Panzas, Santa Clara, and a few others. Though most are on the recommendations of others.