I'm little bit confusing which HDD is to buy. Actually WD passport is the smallest one in external HDD market. So i'm greedy to buy it. Although segate expansion portable is not bad. it is little bigger that WD passport. I saw somebody to say that DONT BUY WD PASSPORT and all that. So please friends give me some review. WD is the smallest one so it may bring biggest problem i think. Please tell me which one to buy. Thanks...........