I've been following this thread for quite a while and it's definitely been an eye opener! Anyway, I've got a specific question so I decided to sign up to OCN and post for the first time in this thread. I'm planing to use four 140 mm PWM fans in a Define R4 (I know it's probably the most talked about case in the thread but my question is about opinions on two specific fan models). Configuration will be three intakes (2 x front + 1 bottom) and one exhaust at the rear. Top HDD cage will be removed of course. The truth is that, without the knowledge gained in this thread, I would had probably gone with an extra fractal fan as front intake and call it a day, as I hadn't realised how restrictive those filters are. I have tested a fan with and without the filters and difference is immense. Add a HDD cage in the mix and I'm betting that the 3 intakes combined might have less airflow than the unrestricted exhaust!
I want a black and white theme, so based on info in the tread it comes down to two choices: TY-147 & Gelid Silent 14 PWM. The TY-147 is a proven fan and I've got a TY-140 on my HR-02 Macho, so I know first hand how good it is. TY-147s sell for £6 and the Gelids for £9. I don't mind the extra cost for the Gelids and modding the TY-147s for the front is not a problem either, so both options are a go. I'm waiting for your feedback.
Thanks in advance.