Best affiliate program for VPS hosting?

I want to recommend some VPS's to my website visitors.

What are the best hosting affiliate programs at the moment?

So far i'm looking at these 4

https://www.bluehost.com/affiliates
https://www.ipage.com/affiliate/gettingstarted
http://www.hostgator.com/affiliates
https://www.dreamhost.com/affiliates/

Any thoughts?

This is for windows VPS