Hi, this is one of the best gadget around, but that is my opinion i will let u make up ur own mind with these points i have put together.
The dsi ware shop-Buy games with points from a card or bought with a visa card on the dsi using the internet. At the moment (when i wrote this review) there are only about 8 game in the Uk store, but in the future many more games are expected which utilizes the cameras.
Bigger screens-The screens are slightly bigger than those on the ds lite but slightly smaller than those on the original ds.
The cameras-Not only are they going to be amazing in new games expected to come out soon, but there are lots of affects u can play with built in to distort faces ect, the cameras that high quality but for games and fun tweaking they are fine.
Better Processor- sorry i cant be more helpful but i am aware the the processor is better shortening loading times ect.
Music-You can record your self and play with it in the music section or just play around with music you already have. You can play music but it does not play mp3 file music :(,
Better interface-The start up menu now contains lots of empty slots which u put games and apps in u get from the dsi ware store, much like on the wii. The interface overall looks nicer as well. You can move which apps u like better to the front e.g if you really liked the camera app u could put at the front so when u turn the console on it is on that app.
The memory card slot-You can now take photos and music with on a sd card as the gba slot has been replaced with a sd slot.
Internet browser-The browser does not come with the dsi but u can get it 4 free from the dsi ware store. It work fairly well with nice ds unique features it would be to complicated to try and explain so if u r interested look it up.
No gba slot-Yep for those of you who like their game-boy games there is no longer a gba slot. This also means that ds games that use the gba slot such as guitar hero are not compatible.
R4 not compatible-for those of u who used to use an R4 to get their games u will not be able to use them anymore.
Battery life shorter-The battery life is better on the ds lite than on this.
Much more expensive-At the moment the console is £50 more than the ds lite u r paying a lot of money. I see it as investment, at the movement £50 for a camera and a set of 8 games seems a lot, but in less than a year the shop will be full of games using the camera and music facilities. But if u r new on the gaming and tech scene i wud buy a ds lite as it would be cheaper and better, as all the main games r the same 4 all three ds's.
New accessories- Some people might look on the longer console and the bigger stylus as a good thing but it is highly probable that this has been done to make you buy dsi cases and dsi stylus instead of just normal ds accessories.
New look and no logo-The finish is now a rough plastic instead of the sleek look. In my opinion the smooth finnish is nicer but that is me. one good advantage of the rough finnish is that it prevent scratch and finger marks easier. There is no longer the ds logo on the front making it look slightly plane.
Slightly longer-The console is a little bit longer than the ds lite.
Button moves-The on button has been moved from the left side of the console to the top next to the touch screen. The volume button is now on the side instead of the bottom. The bumper buttons are also flatter, 4 those who use a playstation a good example would be saying the ds lite bumper buttons are like the r2 button and the dsi bumper buttons are like the R1 button.
Thanks for reading i hope that this review has helped decide to make the right choice for u.