There are other budget coolers, not just the Freezer 34 Duo, you know? I'd bet you can still have the BioniX running slower and cooling as well as this "budget cooler", though.I'd pay the extra 10€ for that, considering the Freezer 34 Duo, a supposed budget cooler, is 10€ less but those BioniX fans on it are just not pleasing to listen to.
At least by getting a Noctua I know I'm getting quality fan(s). And their customer support is up there with EVGA's if not surpassing it.
Yes, more 10€ here, more 10€ there, and the all mighty customer support for... a heatsink and some fans. Noctua fans (the people) are starting to sound a lot like Apple's.