I see there are big differences in prices between H-Sphere hosting providers. I see that H-Sphere means servers are configured in a cluster. So what is the difference between, for instance Eirca and Cartika?
I think the big difference between any two companies is the support. One might not be better than the other but they might offer different approaches to support than the other. Those methods used may mesh better with one user than it would with another. When two companies offer a comparable environment it usually comes down to 1) support, 2) technical infrastructure and 3) price.