hell forges... and the countess. other than that... the 6 years of my experience playing the only hrs i ever found was a UM,PUL,IST, and a FREAKING JAH!! that was amazing too mee
The highest you can get off of a forge is an Ist (in Hell.) The Countess' rune drop probability is twofold- part I is her special rune (the one or ones that she will always drop), which can be up to Ist, and her secondary rune drop, which can be up to Lo. The secondary one is very rare.
thanks
PANDA HUSTL$R
thers a kickass guide to find runes
RIP: Demon Hunter: lvl 50 | Barb: lvl 60 (plvl 5) | Monk: lvl12 & lvl70 (plvl 200)