o.O why does the DSL have longer batery life?

i would if i had the game, but i dont

is the game any good???

Im going to get a few DS games this weekend, and im wondering what i can add to my collection.

I currently have:
Pokemon D/P
Some starwars game
Jump Ultimate Stars
&
Lost Magic

I havent gotten a DS game in forever so i was planning on getting these games this weekend:
Kirby Superstar ultra
GTA: China Town Wars
New Super Mario Bros
Mario Kart DS
The world ends with you

are there any other games worth buying?

oh and what is the best way to get a new copy of Tetris DS?