Though it's pretty short, you'll have a blast playing Shin Budokai while it lasts.
Graphics: The graphics in Shin Budokai really impressed me. The game looks nearly as good as the console versions. There are a few sketchy things in the characters though, like the "dotted line" effect that surrounds the close-up versions of the characters, but overall, the animations during the fighting look amazing, and there is never any slowdown at all.
Sound: The sound in Shin Budokai is what you'd expect from a Budokai game. The music is exciting and the sound effects during battles are all here, including character voices for the openings/endings of battles. It would have been nice to have the story elements voiced as well, since there is a fair bit of dialogue in the game, but even so, Shin Budokai's audio is very nicely done.
Value: Shin Budokai one weakness is that it's not the longest of games. The game's story mode took me about 4-5 hours to beat, and like I mentioned earlier, there aren't exactly a whole lot of modes to delve into once you've finished this story mode. You could try getting a Z ranking on all of the story mode levels, and there's a shop system where you can buy stamps and make profile cards which is pretty cool, but overall there isn't a whole lot of things to do other than a couple of modes. If you have people to play multiplayer with then you'll definitely get a lot more out of the game, but it would have been nice to at least have an online option to extend your time with the game.
Tilt: Overall, Shin Budokai is a fun, though short, Dragonball Z experience. It's not the best in the series, but I still recommend it to any fan of fighting games that has a PSP. Whether you rent it or buy it is up to you, but you should definitely get your hands on Shin Budokai. It's a great game that you don't want to miss, especially if you're a DBZ fan.