I would strongly suggest the i7 5820k, as it is a really good CPU and honestly the Skylake 6700k seems in my opinion obselete. Also you dont need the highest performaning CPU cooler, as long as you go water or something along those lines.
 
My CPU is sitting at 4.5Ghz and I could go 4.6Ghz, but I did not wanna add to much voltage to keep it, and im sitting at high 60's and low 70's when doing stress tests, with a Cooler Master Seidon 120M, which is a cheap cooler.

FWIW, Using a larger cooler means more surface area to keep things cool.
The cooler the CPU, the lower the fan RPMs (read noise)
 
The small difference in cost is worth ensuring the machine runs as quiet as possible.

Redsky,
All excellent advice here.
Well, I for the most part finished my 5820 build. It went fairly smoothly. I have not started the OC yet but running stock I am getting maybe 5 deg C over ambient with a Corsair H110 cooler. I had a Syba firewire card I intended to use but when I went to install it, it turned out to be PCI and I needed PCIe for the Asus X99-A. PCIe firewire arrives today.
I got the Corsair Carbide 540 case. It is double wide and the power supply and drive space is in another compartment from the motherboard. This allowed the cleanest build I ever made.
One caveat. I installed win 8.1 on the first SSD while the HDD was connected. For some reason it put the system boot partition on the HDD. I reinstalled with ONLY the first SSD connected. No biggie, win 8.1 installs in like 15mins !.
Anyway, the 5820 is a monster, I am not disappointed in any way.
Michael
 
 

Did you overclocked it yet?

microapp
Redsky,
All excellent advice here.
Well, I for the most part finished my 5820 build. It went fairly smoothly. I have not started the OC yet but running stock I am getting maybe 5 deg C over ambient with a Corsair H110 cooler. I had a Syba firewire card I intended to use but when I went to install it, it turned out to be PCI and I needed PCIe for the Asus X99-A. PCIe firewire arrives today.
I got the Corsair Carbide 540 case. It is double wide and the power supply and drive space is in another compartment from the motherboard. This allowed the cleanest build I ever made.
One caveat. I installed win 8.1 on the first SSD while the HDD was connected. For some reason it put the system boot partition on the HDD. I reinstalled with ONLY the first SSD connected. No biggie, win 8.1 installs in like 15mins !.
Anyway, the 5820 is a monster, I am not disappointed in any way.
Michael
 
 

LumenMedia,
Yes, at least preliminary.
I used the ASUS optimization software. In about 10 mins I had a stable 4.4Ghz at 1.25V with 2800Mhz for the DDR4 32GB.
I manually tweaked the voltage to 1.30V and got 4.5Ghz but it had trouble booting (about 50% of time it booted). I did not have a lot of time so I backed off to 4.4Ghz/1.25V with which I am satisfied until I get time to manually tweak it some more. I get core temps of around 68c after about an hour's stress test. It is completely stable with no crashes or boot issues...Looks like I got an average CPU chip ...maybe a little on the low side but I wanted at least 4.3Ghz and I got that.
Overall it was completely painless. No problems connecting to my FW-1884 via the Siig PCIe firewire card I finally got. Even with the stock Corsair fans and the H110 cooler, it is very quiet. The fans ramp up on POST but then settle down and remain very quite even during stress testing.
A Sonar project which brought my Core 2 Duo E8400 3Ghz / 6 GB DDR3 to its knees (90% CPU) does not even register on the performance monitor now. Temps are  < 30c while running this project.
I also just bought Cubase 8 after I found a deal for $400. Again it is completely stable.
If you are not an old hand at OC (I am not), then you can't beat Asus for making it easy for you.

Very nice rig you got there Michael and yeah, it's really great to have software that makes it super easy to OC the machine.
Of note, I also have a Jackson (Stealth Ex, now 20 yrs. old (another big Randy Rhoads fans)).  

Mesh,
Yes, I am very pleased with the build, thanks. I should have done it a long time ago but was waiting for Broadwell, then Skylake and both those turned out to be a yawn.
 
Sweet guitar you have there. I was a little worried about the neck on mine since I have heard thay can warp on later models but it is rock solid after 7 years. My friend's late 2000's Charvel is practically unplayable though.
Michael

So here's my build - very pleased with the performance :)
 
Intel Core i7-5820K Hex/6 core
16GM Ram : Kingston Hyper-X FURY Memory Black - DDR4 2133MHz (HX421C14FBK2/8 DDR4-2133) 
ASUS Strix GTX 960
Asus X99-A/USB3.1
Kingston 480Gb Hyper-X Predator PCIe SSD (SHPM2280P2H/480G NGFF M.2)
Corsair Hydro Series H100i GTX
Corsair Gamer Series CXM600 600W Power Supply.
 
And everything is connected to my Samsung UHD TV - One question : Will SONAR Platinum scale nicely on 4K? I have not upgraded to Platinum yet...

Very nice indeed Berend!! Looks to be a good gaming machine as well .
 
Reg. 4K, this might interest you: http://forum.cakewalk.com/Bug-when-sliding-volume-and-pan-on-a-4K-monitor-m3177940.aspx 

Thanks for the info regarding the 4K.