What Ram For Overclocking

[ThatBlockishWay]

I'm new to ram overclocking but I plan to get as in depth with it as possible, I want to get to Buildzoid-ish levels of overclocking. I don't know very much about ram overclocking right now and Im unsure as to what kit to get (overwhelmed by info and options), can anyone help? Im using an 8600k on the evga z370 micro. If possible can you give some kinda in depth reasoning as to why the kit you chose is preferable to others? Also does the capacity of the ram weigh in to how well it overclocks, if a manufacturer made two sticks of identic ram only one was 8G and the other was 16G would that matter? I imagine it would

 

Edit: If not pointing out a specific kit what should I look for when trying to find ram to pair with the 8600k? I know different architectures work with different ram better than others, what makes a kit work better with the 8000 series better than a different kit?