Sparkle calibre gtx460 or evga gtx 460???

hi everyone
i am going to buy

i5 760
p7h55vd m pro
2gb 1333
500 gb hd
600 watts psu ( xigmatek )
normal case

gpu???
i am confused which one to get. every one is suggesting sparkle calibre gtx 460 just because of its two fans.. ( i think so ). the problem is that i'v never sparkle gtx 460 card on youtube or any forums that much as i've seen evga's. what should i do?? and i also doubt that its not much popular.   help me.

1 more thing,
i am getting a normal case with this setup.. is it ok for gaming??? or it will harm my components?? there is no ventillation system in this case.

suggest me what ever you can.

i have one more option my Dad gave me that, either go with i3 + LCD or go with i5 + old crt.
if it were you? what would you drop? i5 or lcd.