P300A Mesh. It's pretty cheap and is way roomier than you would expect, especially if you are using an m.2 and don't need the drive racks. Even with my non-modular power supply there's room to spare. My biggest complaint is that the mesh dust covers it came with are held on by the weakest magnets I've ever seen. They're literally worse than fridge magnets. Also one of the cable routing holes is useless because it is covered by your motherboard. -shrug- But I still love it.