What about Phi Kappa Phi?

[Clodfobble]

Here's the thing. Don't start from the premise of "which one of these is the best?" Start from "What do I want?" and then you can decide if any of these offer that to you (and be prepared for the answer to possibly be no.)

What degree are you getting? What are your employment prospects in that field? Do you plan on getting an internship? Do you have specific companies in mind that you will be sending your resume to? The answers to these will all affect whether this, or any, honor society will be of any use to you.

Identify what it is you want in the first place--not what they want you to have.