Don't know anything about the Cobra, but I recently did a build in the ViperGX. Liked it a lot, it gives the flexibility to remove part of the drive cage, and has an external SSD SATA port that I find very handy. About the only negatives I can think of are (1) the window is tinted a little too much--very difficult to see anything inside; and (2) the filters are a little flimsy and take a little effort to re-install. But for the $60 I paid, those are pretty minor points.