Antec 300, Xigmatek Utgard, Fractal Design define R3, .... And apparently you really are LOST, so a good place to start is the BT buyers guide: http://www.bit-tech.net/hardware/buyers-guide/2010/11/03/pc-hardware-buyer-s-guide-november-2010/5 The original list offers the worst bang for buck I've seen in ages.
Even with Sandy Bridge coming out next month, the linked build is still perfectly solid, though I would put a GTX 570 instead of the 480AMP!. Or if you feel like you want to go overkill and really need to spend 400pounds on a GPU then the 580 will fit the build much better. First Sandy Bridge CPU's will be mid range parts replacing the i5 line-up, but after listening to the bit-tech podcast it seems the 2nd gen i5's should perform close to current i7 lvls for much less money and lower power usage. Though this is speculation from me at the moment. Some will also say to wait for new AMD cards, but tbh I will be amazed if they prove to be more than even or just marginally better than the 580/570 line up.
Sorry I use tapatalk from my phone and iPhone language is junk. Some 3d some rendering. I need to Get some software though! Also some games, bring on crysis 2 already!!!!
