Although the T40 is slim and only weighs roughly 5 1/2 lbs, it is lacking on the LCD screen size, comes with a mediocre graphics solution, an no firewire port (boo). Not to mention you will have a tough time trying to upgrade the video board in the T40.
For 2K you can get a loaded Dell Latitude D800 (also a Centrino notebook) that offers an upgradeable graphics solution which is worth its weight in gold IMHO.
Here's what I bought with my 2K bucks.
Pentium® M Processor 1.60GHz
15.4 WUXGA Display
No Floppy Drive
3 Year Limited Warranty plus 3 Year NBD On-Site Service
Bundle Dell Latitude Notebook
Microsoft® Windows® XP Home, Service Pack 1
128MB,DDR,SDRAM,1 DIMM
Intel® PRO/Wireless 2100 WLAN (802.11b,11Mbps) miniPCI Card
9 CELL PRIMARY BATTERY
Free Palm Zire ($99 retail value)
Additional Battery 9-CELL/72WHr Spare primary battery
Hard Drive 40GB,HD,9.5MM,5400RPM
8-24-10-24X SWDVD/CDRW Combo Drive
Internal 56K Modem
Graphics NVIDIA® GeForce4 4200 Go? 4XAGP graphics w/64MB DDR Video Memory
NTFS FILE SYSTEM
90W AC Adapter
Sub-Total $2,464.00
Discount -$579.04
Shipping $0.00
Estimated Tax $155.51
Total Price $2,040.47
I ordered 1GB of Kingmax memory from newegg for 222.00 shipped