The Fractal Design Node is a solid case. It's just as capable as the Corsair, and it has a much sleeker look. It's actually a bit smaller too, considering these are ITX builds, I would assume they're being chosen for their small form factor of m-ATX and ATX.
Dimensions: 250mm x 210mm x 374 mm
I am lobbying for the Thermaltake Core V1. It's smaller than the Corsair while still having all the features.
This build on PCPP is what really convinced me:
http://pcpartpicker.com/b/MsnnTW
Dimensions:
Corsair 13.8 x 10.9 x 11.4 inches = Volume 1714.788
Thermaltake 10.9 x 12.4 x 10.2 inches = Volume 1378.632
the rvz01 is the tiniest slim itx case ive ever seen to be able to fit a full size gpu and an aio water cooler for the cpu while being half as wide as an atx case and half as tall. you should check it out