I am in basically the exact same boat as you. I looked around A LOT.
I am planning on buying a latitude D810. You spoke of the 17in 9300. If you already have a 19 LCD to hook it up to than I really don't see the point in getting the big 17in screen, unless that is the only model with the specs you want. Check out the d810.
Centrino Sonoma 2ghz
ATI X600 128mb graphics
1 gb (512 x2)
7200 rpm 60gb hdd
15 in widescreen (nice for movies)
4:33 battery life (according to CNET and PC MAG)
3-yr mail in warantee
all for about 2250
I haven't been able to find any other systey with
2)centrino cpu (less heat=less cooling needed=less weight=more batery life)
3)sub 17 in screen
4) as much portability
I'm an entering college freshman who needs an upgrade in technology. What I would like is a very fast and relatively portable laptop. I play games and fequently watch DVD's and listen to mp3's, so I'm looking mainly for an AV laptop with a good graphics card (at least 128 mb), fast processor, and a fairly large hard drive (80 GB). Most of the AV laptops have 17 inch screens and weigh 10 pounds, which is way too much for me, especially since I need to be able to carry my computer around, and I have an external 19 inch LCD monitor to hook my new laptop up to. I am name-brand manufacturer savy, and am conidering the Toshiba F15-AV201 (capable yet smaller) or the Dell Inspiron 9300 (I know its not portable, but it has the speed and the 256 mb graphics option). I really need some advice and preferably models. Thanks!