i use the LCD screen to tell me how much RAM I'm using, what percentage my cores are running at, who's on vent or talking on vent (well you use TS on KM ... >.<

, it also works for many games. You can get a css display with last weapon used, who killed u and with what ...
oh and mine also has a cool blue lighting scorp

imo though, the best thing would be to go see it in shops: you might find it too big unless you have a desk to fit it and you might not like the feel of the keys. tbh i cant buy a KB sight unseen