I'm normally not really picky about these things so I didn't go for full-price high-tier keyboard and mouse.
Nonetheless, when thinking about a new PC, I got the A4Tech Multi-Core Gun3 V7 (http://www.bloody.tw/en/product.asp?cid=1&scid=&id=4#.UbU2AdZP2wc) and a 1life kb:bright keyboard (http://www.1-life.eu/?portfolio=1life-kbbright) (you can pick from blue and red leds on the fly)
These cost me 48€ together.