I built this computer to be a gaming PC that could also handle graphic design, programming, sound mixing, and other demanding tasks. I also have a large media collection (600 GBs music and audiobooks, 400 GBs movies and tv shows), and wanted my computer to be able to hold it all. A comparable laptop costs more than $2,000, so I'm pretty happy with what I paid.
I was very happy with the Cooler Master Case -- it's easy to build in and has multiple built-in fans. After several hundred hours of gaming with the MSI Radeon R9 270, I'm very happy with the card, especially considering the price tag. I've been able to play Dragon Age Inquisition, The Witcher 2, and Skyrim on max graphics with few problems and a low internal temp. Since I added the Hyper 212 EVO (and reapplied the thermal paste; I initially applied too much), the computer has run at incredibly low temperatures. About 23-26 degrees Celsius normally; up to 37 degrees Celsius when I'm gaming. And more generally, with all those fans, the PC acts like an air conditioning unit in my room.
A little tricky to install; read the instructions CAREFULLY. Comes with high quality thermal paste and cools your CPU like a dream. I like the fact that you can add an additional fan; great feature if you're overclocking.
Great motherboard, works very well, has everything I need. Built-in sound card works okay; I bought a sound card because I am a bit of an audiophile. I wish it was a little more spacious, but I guess that's what I get for getting an ATX.
Great case, easy to build in, keeps everything very cool. Has three built-in fans, the one on top is huge.