Hi there,
not sure about the level of nesting of comments here, but just wanted to mention that i have used both cloudshare (about 2 years ago) and amazon and have found the latter easier to use and with a more transparent billing. after using it for almost a year, i find repeatable steps easy and intuitive even though there's always something new to learn, e.g. handling space, security groups, ip associations, etc.
thanks,
greg