Which is better: http://www.amazon.co.uk/HEC-Compucase-Cougar-Spike-Micro/dp/B00BP6NHRQ/ref=sr_1_1?ie=UTF8&qid=1373049162&sr=8-1&keywords=Cougar+spike or this http://www.amazon.co.uk/Fractal-Design-Core-Series-Micro/dp/B004ZH18G4/ref=sr_1_1?s=computers&ie=UTF8&qid=1373049262&sr=1-1&keywords=Core+1000
Probably the Core 1000.
Fractal Design always have really built cases and I really like the sleek look of the Core.
If I had to choose between the core and the cougar, the core. But I really think that the corsair carbide 200r is a better case thsm both options.
For that price, I strongly recommend the NZXT source 210.
It looks like both the corsair 200r and the NZXT 210 have better cable routing options than the cougar or the core. The core 1000 does have a pretty nice look to it though.