Well this is my first (official) build. Hosts my plex collection and overall kiosk style machine
-CPU - Went with the pentium since it had a lot of good reviews for the price range, so far its perfect for what I need, no hiccups even when accessing all 4 drives at once.
-MB - Cheap, supports haswell, and had the perfect number of sata ports.
-Ram - Got it for free from a scrapped PC, will probably buy legit ram in the future if I ever upgrade.
-HDD/SSD - had the SSD in my laptop and it works great, speeds are quick, boot time is blazing. no complaints. all the hard drives were externals, now I got to scrap the enclosures, toss the cables, and everything is already connected!
-Case - Reaaaaaally like the mITX cases, and this one had a lot of good reviews. Airflow so far is great, and has plenty of room for HDD's.
-PS - definately wanted something modular with the tiny case, more than enough power for what i've got, and can't go wrong with corsair!
-OS - Also free from student alliance with microsoft. (I also secretly really like w8!)