I've just seen pictures of EKWB's new radiator series, Coolstream SE. These are very interesting for SFF builds, since they are not only slim at 26mm depth, but also trim at 120mm wide. The extra shroud length of 40mm is a little more than the plenums of the Darkside LP series, but I think it's a good trade off for having a nice square shape. Not to mention ease of painting.
Here is a preview blog about the SE 360: http://www.xtremerigs.net/2015/06/15/first-look-eks-new-se-360mm-radiator/
Here is a preview blog about the SE 360: http://www.xtremerigs.net/2015/06/15/first-look-eks-new-se-360mm-radiator/