Well, the 9860 should still blow away the XPS2 with RAID since I think the XPS only allows a single drive. Eventually the 9860 will have the NVIDIA Ultra as well, won't it? Or does the XPS2 somehow make the card perform better than it would on the 9860? I haven't read the whole review on it...
The battery life on the XPS2 is great though (thanks for the tip btw, Noids..:


With two batteries I imagine you'd be able to get three to four hours...on a DTR that's amazing! I don't do number crunching with my computer (just text, web and gaming) so this looks really, really good.
On 64 bit prccessors...by the time 64 bit applications come out and warrant a change to 64 bit, it'll be time for you to change your laptop again anyway. I wouldn't worry about it. If you really really feel you need a 64 bit cpu just get an amd. A PCI-e AMD is bound to be on the way...