Having always been somewhat of a moderate gamer, I've been wanting to make a build for several years now so I finally decided to take the plunge. I know had I practiced more patience, I could have constructed something better (ie Skylake build, G-Sync monitor, etc...), but isn't that always the case? Overall, I'm pretty satisfied with it as a first timer. It was fun and I learned a lot along the way. This site was super helpful along the way and I am forever grateful.
Monitor: Basically my whole build was based on being able to handle the Dell U3415W that I fell in love with while at Microcenter. Although it is not a 144Hz monitor, I find that it still changes the whole gaming experience and Microcenter was able to price match it for a great deal
CPU: I mainly just wanted something that would be future proof and because the i7-6700k's were so scarce at the time I just decided to go with a build that I'd be able to find more support on. I settled on OCing it to 4.4GHz at 1.285V - couldn't seem to find a stable point beyond that and I wasn't quite comfortable with turning the voltage higher than 1.3. I was hoping for 4.6 initially, but such is life. Doesn't really make too much of a difference for gaming either way.
CPU Cooler: I originally went with the H100i GTX based on all the great reviews but my temps under load would constantly creep into the 90's with it. I tried using different thermal pastes to troubleshoot but ended up swapping it out for the 110 and although it was more difficult to fit into the top cage, it comfortably keeps my temps under 70 C. Swapped out stock fans for quieter ones.
Motherboard: Basically picked something that had potential for SLI and was built to handle gaming
Memory: Didn't want to get anything too fancy here, just took the first recommendation from the sales rep. I'm not overclocking it more than the XMP settings, and I only get 2666Hz out of them with my mobo anyway.
Storage: Fast boot times! No complaints here. I'll just get more external storage as I need it along the way
Video Card: I wanted something factory overclocked so that I didn't need to tinker with it too much. The 980 Ti seemed to have the most bang for the buck. Running Crysis 3, for example, even with dual SLI I have to limit MSAA to get 60fps at native resolution but hey, how greedy can one really get?
Case: The only complaint is lack of more sound dampening. Granted, I needed to remove the top covers to put in my cooler but I feel they could have done more with the side panels. Otherwise, it's pretty versatile and has a low profile.
PSU: Seems to be handling everything with ease so far but I'd be hesitant to add any more major components to it .