Mines are:

RSD's BluePrint Decoded: Pretty much the ultimate inner game product. Has a lot about inner game that most PUA products don't include. Think of it as the next level of inner game.

LoveSystem's Social Circle Game: It wins by default because it's about the only major social circle game product. Conquer your campus by the social man is also decent.

I got into the PUA scene in 2005 and absorbed everything. I haven't really used any products for the last 3 years, Id pretty much just practice. All the products would pretty much go over the same stuff. But as of recently I been getting back into products. The last two are the one's that impressed me the most so far.