I have very similar desires for my new case (hopefully this year). I think I've found one that's almost perfect. Only problem may be it's likely not to be an air cooling beast (but WC will fix that or just a decent air cooler tbh).
Corsair's upcoming 650D looks perfect for me. I'm looking forward to seeing them out and around. Good cable management (like 600T, 700D), possibility for water cooling, looks quite subtle but very nice, side window to show off your hardware etc etc.
Only problem is it will most likely be a little out of your budget.