i just need to decide on a psu and cooling

so far i got or decided on
antec superlanboy w/ 2x120mm fans
abit ic7 max3
3.0 p4c
got - 2x kingston hyperx 512mb pc4000
got - ati radeon 98pro
got - audigy platinum pro
got - lite-on dvdw http://www.bestbuy.com/site/olspage....1&type=product
got - seagate 200gb hdd
got - maxtor 40gb hdd

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1. ive got it down to a silenx or antec true
specifically,
http://www.newegg.com/app/ViewProduc...103-908&depa=1
or
http://www.silenx.com/productcart/pc...p?idCategory=2 or http://www.silenx.com/productcart/pc...?idCategory=18

i dunno if i can justify spending so much on a silenx psu tho
im asking for reviews, firsthand or second

2. cpu cooler
whats teh difference between copper and pure copper?
im go with this one btw
http://www.newegg.com/app/viewproduc...118-109&DEPA=1

3. anyone have a gpu cooler?
im looking at this one
http://www.newegg.com/app/ViewProduc...118-211&depa=1
but i have two concerns:
a. if the weight of the heatsink will bend or even snap the card
i dont think it will or they wouldnt have made the product
b. from what i remember the exhaust fan on the case is right on top of where the agp slot would be
if thats the case would it be pointless to get a fan for the heatsink?