I've been diggin Purge with ES but since switching to HC I'm thinking that the Siphon may be a good idea to stay alive and use lets pots. Essentially Redemption for Warlock.

Not sure if there are perks of leveling Siphon up more than base, etc. as seen with other Warlock skills.

1 pt in each, siphon and bane bound. usually I use siphon if dolls or something around

I like bane and siphon, but 1 points is enough with gear all of them pretty worthless down the road when you reach over 60k damage. at that point additional damage is no longer needed, maxing blood oath for 45% all damage reduction is probably the best option.

siphon super useful against t5 heralds

So far Siphon is winning the overall useability. Definitely glad I am going to be incorporating it more. Makes sense due to the huge DMG Warlocks are putting out.

Need those +skills tho.