App Servers


I have been using for the last few months now.

I think Parse servers are now powering over 200,000 apps.

The service they provide is excellent, however i find their servers to be very slow, and therefore my app can get very slow to load content. I am surprised that they don’t have a premium tier leveled model so that you can pay for a faster connection / server.

Can anyone recommend a good hosting / server provider for running a Instant Messaging type app?

Thanks in advance for your help.