Thanks for the opportunity MSI! I've been considering which parts to pick in a $2000 PC build for quite some time now so this is a great opportunity to share with others. Below are the parts chosen, so I'll start from the top of the list down.
CPU: i7-6700k 4.00GHz Quad-Core Processor - Although this CPU is a bit pricey, it's worth it. Its performance is outstanding with 4.0 GHz and a max turbo frequency at 4.2 GHz, which could be overclocked further up to 4.5-4.8, although I'd highly discourage overclocking past 4.2 GHz without liquid cooling. The CPU is a quad core, great for games and programs that require more than dual core to run efficiently. The performance for this CPU is definitely worth the price if you're planning on having the best you could for a $2000 build.
CPU cooler: Corsair H110i GTX 104.7 CFM Liquid CPU Cooler - This cooler will fit perfectly in the CM Storm Stryker tower as it has space for a radiator. I chose a closed-loop liquid cooler because it's fairly simple to install, no risk of it leaking and damaging other components. Its cooling is also great for the i7-6700k as it is known for reaching high temperatures, so closed-loop liquid cooling is a great option in keeping the temperature low while overclocking.
Motherboard: MSI Z170A Gaming PRO ATX LGA1151 Motherboard - This board is one of the best due to the fact that it has DDR4 Boost technology which allows for optimal performance and stability. The board also has a nice on-board sound card. It also includes 3.1 USB ports which are 2x faster than the normal 3.0 USB ports (10 Gbps transfer rate). It's also optimized for multiple graphics card which is great for future upgrades as well as having a max of 65 GB RAM which also gives space for future upgrades.
Memory: G.Skill Ripjaws V series 32 GB (2 x 16GB) DDR4-3200 - For memory it was deciding between Corsair and G.Skill. I decided to go with the G.Skill due to the fact that it had many positive reviews, as does the Corsair, while remaining cheaper. Going with the 16 GB causes the price to go up by quite a lot, but it's worth it (I'll explain why in a bit). Deciding on which speed to choose was also another factor. I decided to go with 3200MHz because it's the highest that the motherboard I chose could run, which makes for great compatibility and taking full advantage of the board. Now as to why I chose 16 GB a stick was also because I wanted to take advantage of the compatibility of the board being able to take up to 64 GB which means I could add 2 more 16 GB sticks to increase the memory size if I wanted to in the future.
Storage: Samsung 850 EVO-Series 250GB 2.5" SSD and Western DIgital Caviar BLue 1TB 2.4" HDD - When making a gaming computer, you always want the fastest speed possible and with this build, it's what we're going for. That's why I went with the SSD chosen because it's able to read at a speed of 540 MB/s making for a great start up time for OS and games. Samsung's SSD also has Enhanced RAPID mode which allows for 2x faster performance by utilizing unused memory. Of course not everything will fit on 250GB which means you only want to put your operating system on the SSD as well as frequently played games that require fast loading screens and startups. The WD HDD gives you the extra room for storage.
Video Card: Msi GeForce GTX 980 Ti 6GB Video Card - This is definitely a pricey part of the build but it is well worth it. The 980 Ti outperforms the Titan X in most of the benchmarks while only having half its memory(and $300 cheaper). The 980 Ti definitely has less memory than the Titan X but it's also significantly cheaper. Even then, saying it has less memory doesn't really affect the performance for gaming due to the fact that it has 6 GB. The 980 Ti is a better option for its price, and with the motherboard chosen an addition of another card is always applicable for SLI, with the upgrade of a PSU for the higher voltage requirement.
Case: Cooler Master Storm Stryker (White) ATX Full Tower Case - This is a great case with a lot of room, great cooling and cable management. It also comes in black for the same price, up to one's preference. The fan controls at the top of the case allow for maximum cooling when required (overclocking). The mesh front allows for frontal cooling. Personally I'd rotate the fans from the sides to the front, providing better cooling. The ventilation holes are covered by dust filters, which make it a lot easier to clean.
Power Supply: EVGA SuperNOVA P2 850W 80+ Platinum - The 10 year warranty is one of the reasons this power supply becomes really appealing. The PSU is fully modular, reducing clutters and improves the airflow. 850W is more than enough to run everything in the included build as well as another 980 Ti and 2 more memory sticks with overclocking. The platinum power supply is great because it has a 10 year warranty as well as lower electricity draw, which pretty much pays for itself if you use your computer a lot for gaming.
If you have any questions, please feel free to ask in the comments!