A Service comparable to CloudFlare

One of my clients have been using cloudflare for quite some time, over the pass months we have been having all sorts of problems like caching not being invalidated,rocketloader failing to load inline/external javascript which in turn is costing my client $ for lost leads. In short I was wondering if anyone know of another service. They are hosted on Rackspace so I'm thinking of just trying out Rackspace cdn (wordpress site) and see how that works, but thought I would ask you guys. Thanks