Please help with classic ST ranger Keystones/auras

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One of the build's you want to pay attention to is
Zeno's Bino's Kitchen knife Crit ST/Reave build. 1.1.3 at http://www.pathofexile.com/forum/view-thread/878989

The author of that build says both evasion and armor versions of the build can be played. I leave you to read the rest of his comments.

As far as my experience as a Ranger goes, I mainly have trouble with two things as my Ranger reaches Level 60 - being lit up by lightning or fire and being poisoned. As neither build Armor/Evasion will prevent either of these two problems (although you can invest another 5 points past Acrobatics to get Phase Acrobatics and 30% spell dodge), it probably doesn't matter which way you go.