100% the Asus Maximus Z370 Hero
The feature comparison table on this site is pretty useful: https://www.gamerstuff.org/best-motherboard-i7-8700k-answered/
After recently purchasing the 6700k I went for the ASUS Z170 also, Price-wise it's a lot cheaper now in 2017.
Here is a good comparison of the best gaming motherboards for the i7
In 2011 I picked up my first LED power supply, In my 2017 build I didn't bother, I guess my tastes changed
This isn't for everyone but I can see the appeal for people who buy it, Those are the ones who buy LEDs on their ram sticks