Yes, going on 3+ years. The plus of 200cm fans are that they spin at lower speeds and still get good air flow. The lower speed also results in lower noise and a longer life.
I own a CM 690ii and a Corsair 600T. I feel the build quality and cooling are equal. The 400r is a step down from the 600T. Both the cases you have in mind are good cases. Just comes down to price.
Yes, going on 3+ years. The plus of 200cm fans are that they spin at lower speeds and still get good air flow. The lower speed also results in lower noise and a longer life.