I have had my XPS2 for over 2 and a half years.
I bought my XPS2 pretty much the day they were announced (but switched when a coupon came out).
I had to wait 6 weeks to get it. Took delivery mid April 2005.
I upgraded to the 7800 GTX in Nov 2005. (I still have the original 6800 Ultra in a box)
Upgraded to a 250Gb HD around sept 2007.
I use the stock dell drivers. Since I use this for work, I have never spent time experimenting.
I have had the usual problems with it:
I don't over clock but Nov 2007 the 7800GTX died. It was replaced under Dell's Complete Care warranty. My LCD screen got a green vertical line a few months ago. Dell also replaced without problems.
I use my XPS2 for work. It travels with me everywhere. It still looks good and works great. I don't game as much as I used to, so no need to upgrade. This machine is still very capable.
As pettersson72 pointed out, if i could upgrade to a duel core there would be no desire to. I run both XP Pro and Vista. The CPU gets the lowest vista score.
I have no plans to upgrade personally.
However my work discovered a few weeks ago that I was using my personal laptop for business. So in the name of Sarbanes-Oxley (internal controls) and to comply with Software Site licensing agreements, after using it for over 2 and a half years I am being forced to get a new laptop.
The Standard issue laptop these days' is a Dell Latitude D630.
I mentioned the specs of my machine and that I preferred the 17" screen.
I guess the IT guys like me because the machine I should receive in less than a week is a Dell Precision M6300 with NVidia Quadro FX 1600M 512Mb.
I look forward to running some 3dmark test on it.
My XPS2 will probably be passed down to my girls, as their PC is over a 6 years old.