I usually look up Gamespot and IGN for game reviews, and I must say something about the quality of games for the DS. Apart from major games from Nintendo or SquareEnix, many DS games are just lacking in quality.
Personally, I respect the DS and even have a DS Lite (polar white ^^), but the only game I really enjoy is Mario Kart DS... which I bought with the DS.
Before I get a game, I look at the review scores to avoid "wasting money", but there aren't many quality games for the DS at the moment. Also, the vast majority of DS games are so substandard, I can't bring myself to buy one for the Nintendo system.
The games I am looking forward to are coming out later this year. Hopefully Dragon Quest IX and Phantom Hourglass fulfil my expectations... hopefully.