Nintendo DS
The Nintendo DS is not your traditional hand held gaming system as it features two touch screens and really gives the user a completely different gaming experience as opposed to a system like the PSP which still requires the user to push buttons to maneuver through the game.
There are many distinct advantages to the Nintendo DS including its touch screens and also that it is a fairly cheap system and there is a good variety of games that you can purchase for the system.
Many of the games that you can purchase for the Nintendo DS are not going to be of the same quality as the PSP. You will find that the PSP will have a lot more fast pace games and the Nintendo DS will have more slower paced games that take more thinking rather than skill and speed. For example the Brain Training games on DS are excellent mental skill games and have actually shown to increase the brain activity level considerably.
The Nintendo DS would mostly be recommended for younger kids as that is where most of the games are targeted to and the way that the DS is set up it is more kid friendly compared to the PSP which is mostly marketed to the older teens who like mature action games.
The Nintendo DS does come in a variety of colors which is a little incentive to buy it, it comes you would want and is a gaming system to fit the lifestyles of more than one target market.
Some of the best games on the DS are Super Mario, Sonic, Asphalt, Need For Speed, Worms, Dogz, Catz and Zoo Tycoon.