Are you suggesting those to me or for yourself? Just need to know which cases fit my requirements for my future radiator changes and separate loops. (plus all the 5.25" bays I need to occupy.) I may get 2 x 480s, one for each loop. But really it's the CPU (whether it's the haswell or the upcoming chips) that needs the most attention.
I love the Merlin SM8, it is perfect for me. It can fit 2x480 and 1x360 if you install the vertical PSU bar. When I do upgrade to a larger case it would be the ST10 so I can put a front 480 and top 480 leaving my psu/pumps on the bottom. Then you can just call it a day.
I would suggest to you the ST10 if you want 2x480s with PSUs on the bottom and the SM8 if you want 2x480s but PSU on a vertical bar. Up to you really.
I was just saying about the mercury that i'm doing a build with one in the future just because I love SFF/iTX builds.