HDR & FSAA noticably better than just HDR?

[whoatethepies]

Does anyone know how much difference running Oblivion with HDR & FSAA makes to the image quality than with just HDR? The reason I ask is that I'm upgrading soon, and would normally go for an nVidia card (7900 GT looks good), but only the ATI X1900XTX can support HDR & FSAA.

It's a bit more than I'd like to spend, but if it makes a big difference it might be worth it in the long run, as other games come to support these features.

Anyone had first hand experience (or know of a site with a comparison)?

Thanks.

[rox0r]

Oh it's good, it's really good.

The X1800XL/XT series can do it too btw.