For a debut by three 17 years old, it isn't really that bad. I hate to say it but the best songs are the hits. If you are a huge silverchair fan then you will probably love this album, but since I'm not I guess I could've lived without it.
Madman is a good instumental song, the vocal mix is better, though.
I was very disappointed since when I buy a new album I usually don't listen the popular songs first and, on this album, they were the best ones. For a debut this album really wasn't that bad, but wasn't great either. A vocal version of Madman can be found on Tonnage 2 .