How do you guys get those Enigmas and other High-end Runewords?

Well, It seems I got lucky with it. Started to play in december,

Jah dropped in february, got it in act II

Ancient Tunnels and

Ber was accuaired by trading, had socketed

Dusk Shroud already. The fun thing I didn't look for Enigma at all as I play frienzy barb and speed farming is not my thing. I gave Enigma to my necro friend. But I was in need of

Lo from the start and I haven't seen any dropped by now but traiding helped to solve it.