Once I got to the "pretty good" level this build ( Breaking Point and Serpent Mask) became less effective.

Energy recharge, and cooldown acceleration seem more valuable than the small lifesteal. Clockwork is fun, but I'm not sure it's the most valuable.

Most enemeies either try to get away before I build many breaking point stacks, or teammates come help kill me. I've been using Bonesaw instead.

After bonesaw I've been grabbing Frostburn which makes it easier to chase, or run away from enemies.

If you're alone in the jungle against two enemies it seems more worth while to go pure offense, especially weapon power so you can burn down a single target FAST.