Add http://cdkeysdiscount.com/ to legit. Used them a few times now.
Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
Which is the only thing that is really considered "legit" since the TOS of most of the other keys forbids them being sold in other countries...most cd sites are legit however only gmg is the one that uses valid us cd keys
Add http://cdkeysdiscount.com/ to legit. Used them a few times now.
None of them... they pretty much all sell grey market keys, whose legitimacy depends on how you look at it.
It is against the terms of Microsoft's licensing to sell MSDN Licenses.
The key will get terminated within a short period of time.