I used to go for Mjollnir with raijin. Skadi was the second item of choice. But then i went through a replay of CvP where he went for MKB + Helm build.
Now i like MKB Helm build.
Because when i can buy:
BKB + Hyper + Helm + MKB [this build gives 500 less Hp and 4 to 6 less armor, but it offers insane attack speed, life leach and 50 more damage PLUS BKB]
with with the money that is needed to buy a:
Skadi and Mjollnir[this build offers 500 more Hp and perma slow, but less damage and attack speed and it makes you target of the stunners]
The problem is that I am just a New Player. I ask opinion of better players... feel free to post please.