Alright it looks like you are looking for something similar to what I was looking for and we have the exact same budget 1600 though I don't care if I go over 1600 with warranties. Also some information that would be good to know is that Centrino is a package not a processor. It contains a pentium M processor, an intel chipset and their wireless networking module. Now Centrino might not be the best choice for you, why? Because in the intel chipset is a graphics control. Probably integrated intel extreme graphics on the motherboard. Here is a link to a comparison between pentium m and centrino
http://www.atheros.com/pt/Centrino_v...whitepaper.pdf
For photoshop, cad and illustrator you might want bette graphics capabilities than the intel integrated graphics and for performance purposes it is better to have a graphics card with dedicated memory than shared memory that pulls from your ram. You may notice the effects when running complicated filters in photoshop. Also if you get a laptop backpack it would not have to be less than 6lbs. The weight will be a limiting feature on the laptop you are looking for... less than 6lbs and having possible capabilities to be a desktop replacement that limits what you can get also. With a backpack even 15 pounds is light, but I would say if a backpack isn't your thing look for 8 pounds and under and keep in mind to check the weight WITH the battery because many companies don't include that in the weight and when yuo want 4+ hours of battery life and high performance for photoshop you will probably need a 12cell. So that is just something to think about, I hope that helps and if anything is incorrect let me know.
Here are two laptops I am looking at:
Toshiba M30X
Intel® Pentium® M 725 Processor (1.60GHz, 2MB L2 cache, 400MHz FSB)
1024MB PC2700 DDR333 SDRAM (512MBx2)
15.4" Diagonal Wide-screen XGA Display (1280 x 800)
ATI® Mobility Radeon™ 9700 graphics w/64MB of VRAM
40GB HDD (4200rpm)
DVD/CD-RW Multifunction drive
Atheros Wireless LAN (802.11a/b/g)
Li-Ion Battery (8 Cell, 4300mAh)
PRICE: 1475.10 (before tax and 9.99 shipping)
A bit pricey but toshibas are good machines you could possibly sacrifice ram if you want to upgrade the hard drive, I think for working in photoshop it would be good to run off an external hard drive, 7200 -10,000 rpms because most laptops are less than 5400rpm and that will make saving large files tedious. I plan on having an external hard drive so I gave this 40gigs.
Compaq R4000
AMD Athlon(TM) 64 4000+ (2.4GHz/1MB l2 Cache)
15.4" WXGA Widescreen (1280x800) w/ brightview
128MB ATI RADEON(R) XPRESS 200M w/Hypermemory(TM) (128mb dedicated mem)
1.0GB DDR SDRAM (2x512MB)
40 GB 4200 RPM Hard Drive
DVD/CD-RW Combo Drive
54g(TM) Integ. Broadcom 802.11b/g WLAN & Bluetooth
price $1,343.00
100 instant rebate
mail-in rebate -$50.00
price $1,193.00
Only problem with this is does the AMD athlon 64 run as cool and quietly as the pentium M. This has 128mb of dedicated memory more than enough to do photoshop or the sims. The same 1gig or ram and 40gig hard drive. You could upgrade the hard drive , downgrade the wireless card if you don't want blue tooth or prefer to get a different card. This one is much cheaper, I have heard mixed reviews about compaq but they are good looking notebooks and if you get a warranty AND an accidental damage care plan you should be fine.
Also one more note keep in mind if you want microsoft office suite I happen to have that already so that saves me between 70-150 dollars depending on how much that costs from different companies. I hope this helps you decide what is right for you
Links to the toshiba
http://www.toshibadirect.com/td/b2c/...7&ccid=1291021
And the compaq
http://www.shopping.hp.com/webapp/sh...computer_store