For one of our sites, we ran unixbench on EC2, Linode and StormCloud (LiquidWeb)..and I can tell you that EC2 wasn't the best value with respect to price/performance (not by a lot).
I can also tell you that having not picked EC2, I have, more than once, wished for Feature X offered by Amazon. Maybe Rackspace Cloud offers a comparative list of addons/products, so my point might not be too relevant. But, my point is that price/performance shouldn't be the only determining factor.
I can also tell you that having not picked EC2, I have, more than once, wished for Feature X offered by Amazon. Maybe Rackspace Cloud offers a comparative list of addons/products, so my point might not be too relevant. But, my point is that price/performance shouldn't be the only determining factor.