Looking for a Device Comparison / Evaluation?

Hi everyone,

i have been tasked by one of my Superiors to write a research paper on the "best chastity devices", including at least three unbiased sources. i would appreciate any links you all can provide to any articles or blogs that have some type of device comparison or recommendation that you've used or found helpful.

More generic plastic v steel v resin type of comparisons are useful as well.

Thanks for any help you can give!

asa