guitar hero DS...........is it worth it?

I bought Guitar Hero DS about a week ago and I've had a lot of fun with it. All the songs are big hits so no worries about a weak sound track. But sadly there are only 25 songs. Even with so few songs you'll find that it won't matter as much because of some of the great hits, like "Rock n' Roll all Night", "Were not Gonna take it", and "I don't wanna stop". It even has tracks by "OK go" and "Smash Mouth". With a whole new set up for Guitar hero they had to adjust a few things like how to activate star power, and battle mode attacks. And I have to say that they came up with some pretty good solutions. To activate star power you speak into the mic. and say "Rock On", which I though was clever. But what I love about this game is the battle mode. There are so many new attacks such as blow out the fire, reattach the string, and sigh an autograph. I found that I almost liked it when my opponent would attack me because the attacks are fun to deal with. But not everything is great with this game. You will find yourself taking many breaks because of cramps in your hand, because it is really hard to find a comfortable position to keep your hand in. And because the touch screen isn't the best quality, it gets frustrating when you strum the stings and nothing happens. Even though though this Guitar Hero DS has its ups and downs I think this game is a pretty good. I especially found this game enjoyable on trips. And you won't get bored very easily. To end this review I have to say that despite all of the games flaws, the good points of this game make up for most of the flaws.