My motherboard and processor both decided to die on me at pretty much the same time so I've had the replace both of them. Thankfully I had a full warranty on both of them. For the processor the store just swapped it for a 4790k which was great. For the motherboard I get to decide what I want since they'll just be giving me in store credit. Currently I'm trying to decide between the Asus z98  Sabertooth Mark 1, ROG Maximus VII Hero, and the  Gigabyte GA-Z97X-UD5H. My priorities are cooling and storage though I like the Dual Ethernet ports on the Asus and Gigabyte ones. I would like to keep it under $220, but can spend more if it's worth it. Any thoughts on motherboard choice, I need it to be z97 or at least Devils Canyon compatible which most of the z87 ones aren't out of the box.

The specs on the rest of the build is:
PCPartPicker part list

CPU: Intel Core i7-4790K 4.0GHz Quad-Core Processor
CPU Cooler: NZXT Kraken X60 98.3 CFM Liquid CPU Cooler
Thermal Compound: Arctic Silver 5 High-Density Polysynthetic Silver 3.5g Thermal Paste
Memory: G.Skill Ares Series 16GB (2 x 8GB) DDR3-1866 Memory 
Storage: Samsung 840 EVO 1TB 2.5" Solid State Drive   
Storage: Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive 
Video Card: Sapphire Radeon HD 7970 3GB Video Card
Video Card: XFX 280x Black Edition Double Dissipation
Case: Fractal Design Arc Midi R2 (Black) ATX Mid Tower Case
Power Supply: Silverstone Strider Plus 1000W 80+ Silver Certified Fully-Modular ATX Power Supply
Optical Drive: LG GH24NS95 DVD/CD Writer
Operating System: Microsoft Windows 8.1 (OEM) (64-bit)
Monitor: Hannspree HE245DPB 60Hz 23.6" Monitor 
Monitor: Hannspree HE245DPB 60Hz 23.6" Monitor
Monitor: Hannspree HE245DPB 60Hz 23.6" Monitor
Case Fan: Noctua NF-P14 FLX 65.0 CFM 140mm  Fan
Case Fan: Noctua NF-P14 FLX 65.0 CFM 140mm  Fan
Case Fan: Prolimatech PRO-USV14 98.0 CFM 140mm  Fan
Keyboard: Rosewill RK-9000BR Wired Standard Keyboard
Mouse: Logitech M325 Wireless Optical Mouse
Other: 320gb 5400RPM laptop harddrive
Other: Microsoft Windows 7 Home Premium SP1 (OEM) (64-bit)
Other: Aperture M 5.25" Card Reader

With this computer I'm always worried about cooling so I was wondering if anyone knew if the Sabertooth Mark 1 actually helps much with that as Asus seems to claim?

They put special "Thermal Armour" on it that is supposed to help with heat dissipation for all parts including processor. THey also toss in a couple extra fans and mounts to go with it. Was wondering if those really did anything.

More than just a cool military-styled cover, TUF Thermal Armor employs dual fans to provide boosted airflow for rapid cooling. Reversible-airflow technology blows dust up and away from the heatsink VRM, while the exclusive flow-valve design controls the heat-pipe's air contact — great for liquid-cooling setups!

What I really need is to invest in water cooling my graphics cards since that is where most of the heat in my system comes from. It just doesn't seem to be possible to get enough airflow across them. I also like the idea of having a super hardened board. I'll probably go with the M7Hero though