Usability hackers: Help us choose the right homepage layout.

We're designing our web site and I'm in disagreement with my partner over how best to best represent the products benefits and features on the homepage.

I believe that the homepage shouldn't contain too much information, a brief sentence or two about each benefit with a link to another page with more info about the related feature - see wireframe - http://goo.gl/Bqj2B

He believes in more information available right there on the homepage and by using tabs the user doesn't even have to leave the page to decide whether he is interested in the software - See wireframe - http://goo.gl/g4Ub5

I'd really love to hear from other hackers which they would choose and why? This is the last piece of the puzzle before we launch our software. Thanks.