Which card would you get?
http://www.newegg.com/Product/Product.asp?Item=N82E16814102022 This X1900GT
or
http://www.newegg.com/Product/Product.asp?Item=N82E16814102007 This X1800XT 256
http://www.newegg.com/Product/Product.asp?Item=N82E16814102022 This X1900GT
or
http://www.newegg.com/Product/Product.asp?Item=N82E16814102007 This X1800XT 256