Motherboard - This thing is TINY! I had a hard time maneuvering my massive hands around, especially plugging in the led switches. Other than the size, I've got no complaints. It has all I need. The GPU covered up one of the SATA ports and another is VERY hard to get to, but the other 2 were accessible and all I needed
Memory - I went from 4x1GB of 400mhz to 2x4GB of 1333mhz so it was quite an improvement. I can obviously notice quite a difference in performance. I liked to look of the Sniper better than most other G.Skill so I went with that one.
Hard Drive - s'big
Video Card - Like I said, this thing is a beast next to the motherboard. Haven't tried any games yet (too excited to post!) but its quiet and idles at about 54 (HWinfo64).
Case - Love this case. I think it's gorgeous, its easy to work on, decent cable management options and plenty of bays for anything I would need in the future. The quick connects for the drives are pretty great too. Power Supply - So this is where I became frustrated. I was very excited to go with the modular PSU so that I would have a nice clean case. What ended up happening was the opposite. The sata power cables ended up being 'upside down' and I had to awkwardly turn and stretch the cables. In order to clean up, I ended up just using both sata power cables; one for the optical and one for the hard drive. Also, the 4 pin connector was so short, that, forget cable management, I had to drag it across the CPU fan! But its quiet and does what I need it to do. And I guess its hard to plan for things like that.