ati 9800 256mb or fx5900 256mb for fs2004?

Looking at at the reviews for these video cards it almost seems like in every benchmark the cards go back and forth, dancing around each other. One map will run one card faster, another map will run the other one. One resolution shows a card faster, another resolution shows the other fast. It makes deciding which is the fastest card for upcoming FS2004 a very hard decision. Will it be 9800pro 256mb with the 8 pipeline card clocked at 380MHz or the 4 pipeline card clocked at 450MHz with a lot of bandwidth be the choice for FS COF. Both priced at $500 makes this a very hard decision to make. WHAT DO YOU GUYS THINK??????????????????????????????????????????