See attached image..
The best bang/buck EC2 instance for CPU is ironically a GPU instance.. it's cost/performance = 0.42 while the most powerful 36 core machine is about 3 times as expensive at a 1.2 ratio.
Since corona is limited on node count I'm forced to pick the 36 core machine to render it quickly. But if I would be able to launch 5x that amount of GPU instances it would take about the same amount of time but I would have to pay amazon only a 1/3 of the price.
I'm not asking to change the pricing model right away but when you guys are rethinking pricing options please take this into account :)
edit: 'ECU' in the screenshot below is the relative CPU performance index of an instance type.
