I found some intresting Information in my electronic gamer and thought i'd post it since there has been much debate on the issue.


Cost

PSP- 250$ Includes 32mb Memory stick headphones,AC adapter, Carrying case,Demo disk and Wrist strap.

DS-150$ Includes Stylus,AC adapter and wrist strap.

Size

PSP- 6.7x.9x2.9 Inches

DS- 5.9x1.1x3x3(6 while open)Inches

Weight

PSP- .62lbs

DS- .61lbs

Screen Size

PSP- 4.3 inch LCD
16:9 Ratio

DS- Two 3 inch LCDs
4:3 Ratio

Screen Resolution

PSP- 480x272 pixles

DS- 256x192 pixles

Available Colors On-Screen

PSP- 16,800,000

DS- 260,000

Memory

PSP- 32 megabytes
4 megabytes DRAM(Plus optimal memory stick)

DS-4megabytes

Game Media

PSP- Universal Media Disc-1.8Gigabyte Capacity.

DS- Cartridge 1 gigabit capacity
(note: 8 gigabits=1 gigabyte so the PSP can hold 14 times the amount of data)


Wireless Communication

PSP- IEEE 802.11b(wi-fi)-up to 11mbps transmission, 16 people Multi.

DS- IEEE 802.11b(wi-fi)-up to 2mbps transmission, 16 people Multi.

Battery Life

PSP- 2.5 hours playing Movies 3-6 hours playing Games

DS- 6-10 hours playing games

Other Features

PSP- USB 2.0 Port, Analog Stick,Can Display jpg pictures, mp3 music and mpeg4 movies.

DS- Touch Screen Backwards compatible with GBA/GB. Build in Microphone.

Hopefully this will help you decide what you want to get .