I got my Phanteks P400 case about 2 weeks before the Tempered glass version was announced. I couldn't afford to buy a new case due to my son being born. So I
Phanteks>Eclipse Series>P400S Tempered Glass
Phanteks Innovative Computer Hardware Design
P400S Tempered Glass Airflow Mod - Speaker Grilles from China costing £2.30 : r/Phanteks