After successfully swapping out a noisy case fan on my pre-built HP two years ago, I knew my next machine would be completely built by my own hands and I would stop paying others to install upgrades for me.
Since the drive on that PC died before I had a ton of money saved up, I recycled the video card and the memory until I can do further upgrades later this year.
I think I may have been spoiled with the Enthoo Pro case being my first case; it was just so easy to use and looks great. I'm also glad I sprung for the NZXT HUE Led since it has many options for customizing your case lighting (and it magically fit in the edge grooves of the Enthoo Pro, to the point where I never had to use the adhesive backing it came with to get a snug and secure fit).
Upgrades for this year include:
*A new graphics card - some where in the $200-300 range
*After-market CPU cooler - I got a deal on the i5-4690K from Newegg, might as well give overclocking a shot
*Slightly faster ram - probably something that fits cosmetically with the rest of my components
*Replacement case fans