So, I originally had an Alien X51 r1 and decided the GTX 660 would not cope well with the upcoming game Total War: Warhammer. I ended up buying a reference GTX 960 and the improvement was good but not great and there were potential issues of overheating.
I then decided on a GTX 970 as it has decent performance without the huge cost of the 980ti. However, to power the GTX 970 I would need a new a new PSU, this meant a new case and then a new motherboard and so on until I ended up with pretty much an entirely new build. By this point I'd caught the bug and so went all out. Luckily I was able to offload most of the parts from my old Alien X51 and add this to the budget.
The first picture is the result of the initial purchases it is pretty much as the parts list but without additional RAM, SSD and GPU. The additional SSD has now arrived and I have them configured for Raid 0 and use my old HDD to back it all up once a week/. I have also installed the NZXT Hue+ which has done a very good job of frustrating my fiancé, but it's quite cool although there is a noticeable delay when you tack the audio output to the colour output.
A quick mention about the NZXT H440. After I installed most of the components the plastic window was a little dusty, I used the same cloth I use for cleaning screens but there were some pretty noticeable scratches left on the window. Unusual for me I actually emailed NZXT to complain about the scratches and if it was possible to source a replacement... to my surprise they've actually sent me a new window free of charge, great customer service.
The Corsair H100i GTX cooler is a pretty decent cooler, though i have not been able to max out the CPU to test temps. However, The pump is not entirely silent and can be a little loud.
I moved from an 3 year old 1TB HDD to 500GB SSD and the difference is huge!