Which of these DS games do you think I should get?

[KentaRawr!]

Well, my brother and I were just arguing about Tetris DS, and somehow that convinced me to make this topic.

Firstly, I would like to state that reason should be put into your reccomendations. I hate one-liners. Secondly, while it would be appreciated if you stayed within the poll, you are most certainly welcome to suggest another game. And lastly, some questions about the games in the poll...

Is Tetris DS worth it if I can play Tetris on a random site's arcade section? How enjoyable are the extra modes? And how is the Wi-Fi play?

In Bleach DS, is there Wi-Fi play? And if there is, how good is it?

In Kirby Canvas Curse, does the touch screen control hinder the over-all fun of the game? If it does, how so?

About Sonic Rush... Well, how good is it? Does the screen switching hinder the gameplay at all? Is there a large focus on story, or is it mostly fast-paced action like earlier Sonic games? Does the new fire-ball attack of Sonic throwing his head at the air really add much to the game? If so, is it a good or bad thing and why?

Big Brain Academy... well, is it actually as fun as people say? Is it really THAT addictive? Can it truly make my mind explode with happiness!?

In Mario & Luigi Partners in Time, does the two screen gameplay hinder anything at all? Is it as good as the first Mario & Luigi RPG? And is the game really short?

In Advance Wars: Dual Strike, would it be too hard for an idiot such as myself to enjoy? Is there a way to tone the difficulty down at all?

Edit: By the by, I already have Super Mario 64 DS, Mario Kart DS, Castlevania: Dawn of Sorrow, Metroid Prime Hunters and New Super Mario Bros. I also have Mr. Driller, but he's going to be traded in.