Mainstream cloud hosting providers - who's good?
 

Kind of as a hobby I run a local non-profits site - it's getting bigger faster so I need to upgrade the hosting. I've been thinking of cloud hosting it for maximum flexibility and scalability.

I kinda want to keep it seperate from adult stuff, so I was wondering if anyone has suggestions for mainstream cloud hosting companies.

It's hosted at a place called midphase, and they are pushing http://www.vps.net/ .

So, cloud hosting input please?

GoGrid
Amazon EC2
Rackspace Cloud