They are both great cases. Cant really go wrong buying either. The HAF has great air flow and very roomy for a WC set up. Only con is that it lacks air filters. The Cosmos 1000 also has good air flow and is very roomy, it also is insulated to reduce fan noise. So its a very quite case. The Cosmos 1000 only con really is that it doesnt come with a window side, you have to buy one aftermarket if you want a window side. And thats not really a con if you dont want a window.
I personaly went with HAF 932. and I am happy. No dust filters yes , but usually I clean my computer once a mounth. So no big deal. Really , it's you're choice
you can buy a 1000 complete with a custom window, though it's an extra $70 http://www.performance-pcs.com/catalog/index.php?main_page=product_info&cPath=194&products_id=22442 the only thing about the stunningly gorgeous Cosmos 1000 is maybe the airflow through the HDD cage. I'm slogging along on a new Cosmos build and that's one area I'm going to try and improve.
