Just confirming what others have said, that this is a good laptop and deal especially with the SSD. The new Latitude line is nice and all their accessories are interchangeable. Build is pretty good, better than any consumer version, of course.
I don't have this computer, but I have an XT3 with basically the same specs. Performance wise, I can run L4D and L4D 2 just fine. Not the newest and greatest games, but it can play some games. I primarily use it for personal work. With the 9-cell extended I get about 8 hrs of word processing and internet browsing. using the "Cool" dell power setting.
Depending on which Dell power manager version you have, you may have the "Quiet" power manager choice, too. No burnt laps or palms to worry about.
Also, just to reiterate, many people seem to not realize the different support levels. I've never had a problem with Dell hardware. None of mine have failed, even the consumer level Inspirons (knock on wood). But, I did notice, if you use the Latitude line and call tech support, you get someone in the US. With the consumer computer line you get India.
I'm not sure where they draw the line.. vostro, xps.. etc.. but definitely Latitude and Precision get US tech support, as those are their premium business computers.
Also, keyboard is a bit mushy in my opinion and not as responsive. Sometimes I have to hit a key twice because I didn't push hard enough. I have two ThinkPads... so if you're coming from those, you'll be disappointed with the keyboard on the new Latitudes.