How many SSD and HDD are you using or planning on, and what about cooling?
I also agree that these days a 550w to 650w is about all any single GPU user will need, 750w for SLI due to newer Nvidia's being so efficient.
I love the build quality and ease of working away inside my Phanteks case, I am also tempted by a few of the Fractal models for the same reason, though the models I like all carry over legacy choices, optic bays, plenty of HDD slots, and too much room for those still thinking of Monsta rads as equipment gets more efficient.
There is one case I keep thinking of as about as good as it gets requirement wise. That case is the NZXT S340.
I got one of those some time back, my lads are getting it in a new build, but it just looks so right, no optic bay, easy to build in, hidden PSU and plenty of cable space, space for a couple of SSD, a couple of HDD, and it's full ATX, air cooling, AIO, custom water, all possible. And it's small, and easy to deck out with an £11 RGB kit.
Only thing is, it's a little cheaply made, paint chips easy, thin metal in places.
Regardless of all that, the NZXT S340 has probably been my favorite case in years.