I don't like rounded IDE cables, as they don't meet the ATA-66+ spec.
I'd go for SATA if you have an Intel ICH5 southbridge SATA controller, as I believe that doesn't require a driver disk to install Windows XP. Otherwise, it depends which bugs you more - IDE cabling, or using a driver disk (or slipstreaming the drivers into a custom WinXP install disk.)
I have a VIA-based Athlon 64 board - I picked SATA and it's working well for me. But your mileage may vary.