Entirely depends on aesthetic preference, what you're using the case for.
If your budget is limitless, then obviously the TJ11 is pretty much as good as it gets for out of the box performance and features.
If your a normal person, the CM690-II and the Lancool PC-K62 are probably the best cases for under £100. For a bit more, the Silverstone RV-02 has awesome cooling performance and looks cool to most people. However, some people don't like the exterior look, it is very big for the amount of internal space and some people don't like the shape/orientation. The HAF-X is about the same price, and is cavernous inside. Not much space for watercooling though, surprisingly, and it's not exactly good-looking or subtle.
Approaching £200 and the Silverstone FT-02 is a pretty much perfect case, the only problems being the size/orientation (which is subjective, anyway), and the lack of watercooling space out of the box. It's pretty much the best air cooling case on the market, has enough space for most high-end setups and looks pretty amazing too.
Spending more than £200 and you probably already have enough knowledge to choose your own because you need it for watercooling or something. However, I would guess your not, so I won't bother (unless you really want me to).
EDIT: Just noticed you have the words "water cooling" in your sig. /facepalm
Pretty much as above for watercooling cases. The 800D does everything for an out of the box watercooling case. Its got plenty of space, plenty of nice features, looks amazing and comes with a windowed side panel. However, it does get a bit cramped if your watercooling everything (your not at the moment I see), so you may want to consider something with a little more potential if you plan to expand in the future.
Other cases for watercooling are the TJ-07 (which I believe is EOL now, but can be had second hand), which is arguably one of the best cases ever made according to enthusiasts, Lian-Li PC-A7x cases, Coolermaster ATCS 840, or if you want a real challenge, look up what Webbo said about the Mountainmods cases.
