The internals on the In Win Grey case look very similar to my In Win GT1 case and all of that works really well for me. Can’t take huge video cards, but it did take a 10.1" GTX 970 just fine.
Missing for me for that price are the fans that come with the GT1. It does say it has an external SATA docking bay on top (which is very convenient), but can’t see it in any of the pictures. I can’t speak to case structural integrity, but mine’s good enough I would take the GT1 over this one.
*P.S. - Did find pictures with the external SATA docking bay elsewhere on the internet, so it appears to have that useful item. *