Personally in terms of cases I've always gone for quality over looks, the case is the whole housing for your PC. So just be careful that you don't chose a bad quality case just because it has some cheap pretty looking glass side panels and nice colours.
That is a good point. I think i am going to go with the NZXT M59 case as it has very good reviews that say it is very good quality. I also really like the look of it and you can install 5 fans in it.
I have almost finalised the hardware I am going to be using, I'll let you know what it is going to be soon.
Once again, thanks for all of your help.