The Maximus IX Formula is built for liquid cooling. Seems a waste to plug your VRMs/chipset into rads, have a mighty reinforced backplate, etc, then stick an air cooler on the hottest and most important part (the CPU), lol. Maximus IX Code would be a better choice for full air cooling, I think.
Raijintek TISIS is another excellent huge air cooler. Performance roughly on par (sometimes better, sometimes worse) vs Noctua's mighty NH-D15. But that's using Raijintek's decidedly mediocre stock fans - it certainly outperforms the NH-D15 when equipped with better (lol, Noctua) fans. The TIMs supplied by Raijintek and Noctua aren't that great either, upgrading to Arctic, Gelid, Prolimatek, Phobya, or whatever will increase overall cooling efficiency. Although for the same cost as cooler plus fans plus TIM you might as well just get an AIO or DIY loop instead, lol.
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[/Korth]