Hi, as already pointed out it really depends on your skill level and objectives.
I guess you're building a content site otherwise you wouldn't be considering a CMS.
If you have no coding knowledge it Wordpress, Wordpress, Wordpress. It much more ready out of the box, great themes and can get you all the way to a full running site in no time. Most of plugin get their job done without having to dig deeper in configuration/coding.
Drupal on the other hand has more potential if you're going custom but not re-inventing the wheel. At the moment it is really in between a CMS and a Framework. Extensive API and a lot of modules that offer APIs and hooks more than a polished and refined end user interface. It's great if you have programming skill though the learning curve is generally agreed to be somewhat steep.
You can do a lot of customization on wp too but in my experience you can go only up to a point without wasting time. On a different level the same applies to dp. You can customize anything you want but then, why not write the whole thing yourself?
I also have the impression that the Theme market is generally wider in the Wordpress world but i've never been to much into buying themes so it might not be that true. (and a lot of themes have both wp and dp versions)
You should try to find some examples similar to what you're planning, read some case histories and do some research.
cheers