I purchased ResellerClub's cloud hosting plan 3 years ago and things are smooth with my clients. Don't have to worry about uptime bandwidth or even support. Their service is really good. My concerns earlier were with their CDN because I wasn't sure if it could provide the same uptime to global clients, but I was proven wrong. They use Cloudflare which is one of the best CDNs for their content delivery network. It really helps.