Wings3d is the best subdivision surface modeler in existence barring perhaps Mirai. As an added bonus it is free. If you want to model high poly and/or organic subjects this is where to go:
www.wings3d.org (the www. is required)
Wings has an incredibly clean interface and it will probably take a while for you to find some of its more advanced features, and you will need to read some tutorials about subdivision and box modeling to get the most out of it.
I strongly suggest you look around the Wings official development forum. Although the forum gallery has been less inspirational lately there are links to many good references there.
Links for modeling related sites:
http://cube.phlatt.net/home/spiraloid/ <see the forum>
http://news.cgland.com/index.html?co...700000&start=0 <Huge downloads but worth the time>
Eventually you will want to get into high-end apps, especially for animation, but Wings is a great tool to start with and you'll probably keep using it even with high dollar programs.
[Always remember that if a topic seems uninteresting, then it's just because you are picturing a solution that lacks vigor.] - William b. Hand