I'm playing with http://cdnsun.com/ for my other site,but maybe another one would be easier.
I use CloudFlare... It works great and it is free. Really no reason to even look around.
I'm a huge fan of Fastly. Great performance, reasonable price. Very easy to set up, and they have nice integrations with 3rd party tools, such as Sumo Logic.
We are using many cdn networks for different projects. I would say cloudflare is the cheapest and its very reliable. If you have budget, take the basic cloudflare paid plan which gives you some advantage.
Cloudflare is easy to integrate and you can be online in few mins. It definitely saves lot of bandwidth and server resource utilization.
