Which case is better?

you would know i would recommend the CM scout

XD

Right now, i have 5 fans in my scout. It might be a tiny tiny bit loud, but i always have music on so i can't even hear it.

Antec 900 you can't go wrong

And the tempest i hear is "cheaply" made ... idk . I would choose between 900 and scout

I would choose the Coolermaster Storm Scout. Ventilation, air flow, and cooling is very good. The case is 8.6 inches wide so it can easily handle the tall tower style cpu heatsink and cable management is good too. The case is 19.5 inches from front to back so it should be able to accomodate most of the longer video cards.

The Antec Nine Hundred is of the most popular cases with gamers. I haven't seen actual sales figures but I think it is Antec's all time best selling case.

Choosing a case if often a matter of personal preference. Buy the one you like.

I don't know anything about Rosewill fans. You might want to consider getting CM fans that will match the fans in the Storm Scout. They are available at the CM Store:

http://cmstore.coolermaster-usa.co [...] cts_id=261

I have the 900 and love it, but truly it is a personal preference. You'll want good cooling, which both will provide. Honestly, it'll come down to which you like better.

now my idle core temps for my i7 920 @ 3.2 GHz is like 39/37/38/35 .... I think thats pretty good

On idle, my 4870 1gb @ 375/425 i get like 40 C w/ 50% fan ... if i up to 65% fan i get like 36 C sometimes.

Scout won't make you regret your choice

P.S. just really make sure to measure your heatsink with the dimensions of the scout, it's going to be a tight fit for the top side fan.