I have found the Asus RoG line to be grossly overpriced and that ya can get the same features from Gigabyte of MSI for about 2/3 the price with better performance, better newegg user reviews and better componentry. The Asus BIOs is more intuitive but I won't pay that kind of premium for it.
http://www.overclock3d.net/reviews/cpu_mainboard/msi_z97_gaming_6_review/10
The ranking is based on setting the board which recorded the highest combined fps in the gaming tests at 100% and ranking the others by fps as a % of the fastest one.
MoBo % of Leader
MSI Z97 Gaming 9 - 100.00%
MSI Z97 Gaming 5 - 99.86%
MSI Z97A Gaming 6 - 98.96%
Asus Z97 TUF Sabranco - 96.13%
Gigabyte Z97X Gaming 5 - 95.00%
Gigabyte Z97X SOC Force - 94.95%
Asus Z97 Maximus VII Hero - 93.67%
Asus Z97 Maximus VII Formula - 93.58%
Asus Z97 Maximus VII Gene - 91.69%
Asus Z97-A - 89.57%
MSI Z97 Mpower MAX AC - 88.20%
MSI Z97S Krait SLI - 71.01%
Note how the $125 / $150 MSI / Gigabyte Gaming 5's are outperforming Asus $200 - $300 boards.
Another ranking appears below .... based upon which boards might be best avoided. The % listed are the percent of board owners who posted highly negative (1 egg) user reviews.
Asus Z97 TUF Sabranco - 3%
http://www.newegg.com/Product/Product.aspx?Item=N82E16813132414
MSI Z97 Mpower MAX AC - 4%
http://www.newegg.com/Product/Product.aspx?Item=N82E16813130765
MSI Z97 Gaming 5 - 10%
http://www.newegg.com/Product/Product.aspx?Item=N82E16813130770
Asus Z97 Maximus VII Gene - 11%
http://www.newegg.com/Product/Product.aspx?Item=N82E16813132136
MSI Z97A Gaming 6 - 12%
http://www.newegg.com/Product/Product.aspx?Item=N82E16813128709
Gigabyte Z97X Gaming 5 - 14%
http://www.newegg.com/Product/Product.aspx?Item=N82E16813128709
MSI Z97S Krait SLI 19%
http://www.newegg.com/Product/Product.aspx?Item=N82E16813130801
Asus Z97 Maximus VII Hero - 19%
http://www.newegg.com/Product/Product.aspx?Item=N82E16813132125
Asus Z97 Maximus VII Formula - 26%
http://www.newegg.com/Product/Product.aspx?Item=N82E16813132247
Asus Z97-A - 27%
http://www.newegg.com/Product/Product.aspx?Item=N82E16813132118
MSI Z97 Gaming 9 - 28%
http://www.newegg.com/Product/Product.aspx?Item=N82E16813130808
Gigabyte Z97X SOC Force - 29%
http://www.newegg.com/Product/Product.aspx?Item=N82E16813128704
Now with Z170, it must be said that all the boards seem to be within 1-2% of one another but again, the price premium on the RoG boards is still running b50% or more above comparable boards from MSI / Gigabyte
Note again that the Asus Pro Gaming has gotten pretty poor reviews from board owners
http://www.newegg.com/Product/Product.aspx?Item=N82E16813132567
22% give it a pretty horrendous 1 egg rating
11% give it a pretty bad 2 egg rating
Look at these Gigabyte boards in the same price range ....THG truncates the link but click on the newegg,com link and then cut / paste the rest after .com which will allow you to view the boards side by side
http://www.newegg.com
/Product/Productcompare.aspx?Submit=ENE&N=100007627&IsNodeId=1&Description=z170%20gigabyte&bop=And&CompareItemList=280|13-132-567^13-132-567%2C9SIA24G3KG3691^9SIA24G3KG3691%2C13-128-836^13-128-836&percm=13-128-846%3A%24%24%24%24%24%24%24%3B9SIA24G3KG3691%3A%24%24%24%24%24%24%24%3B13-128-836%3A%24%24%24%24%24%24%24
Giga's have 2 more SATA 3 ports and 2 more SATA express ports
Giga's have ALC 1150 audio chipset, Asus is hiding what their's is
G1 had dual LAN in case you want to host game server