Which Z170 board for £200?

[spat55]

Think the Asrock Z170 OC Formula is the best right? Needs to have good overclocking and build quality. Sata Express would be nice for the future. 4 boards in my inventory price does matter but I also want the best.

https://uk.pcpartpicker.com/user/spat55/inventory/

 

[vailr]

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[dsplover]

Supermicro C7Z170 OCE for me.
Have an ASRock Extreme 4 that works great too, but the quality of parts and stability of voltages on the SuperMicro made me take a chance.
Glad I did too.

 

[RVC]

Supermicro C7Z170 OCE for me.
Have an ASRock Extreme 4 that works great too, but the quality of parts and stability of voltages on the SuperMicro made me take a chance.
Glad I did too.

I just purchased a new and unused CZ170-M and was surprised at how little I have been able to learn about this board and overclocking anywhere despite a large amount of searching the Internet. Are you able to tell me more about your experience with the OCE version or, refer me to useful discussions on the Z170 boards? I do not have a specific hardware configuration in mind and would even consider a Core i3 that I can overclock. Looking for useful experience and education with OC more than anything. The price of the 6th/7th Gen Core i7 may be prohibitive.