I think I might have to say a blog. By it's very nature you are forced to keep adding more and more relevant content. This kind of content probably attracts more natural links compared to a regular website. The trade off is that the time you spend adding content could be used to build backlinks or do other promotion. So it may depend on your writing skills and your ability to multitask.
A blog can rank faster because it has many web page which can help on getting to the top spots on some keywords.
Blog is faster basically since the content is keep add in. Website normally have less update compare to blog
i'd say the same thing Blog.. alto there are some webistes if set up right will work very fast in getting you on the main page of google.
can be subset but many have ONLY blog as site depends on type of content. for me I have blog as subset. blog typically gets indexed these days in an hour or less rarely a few hours. site can get indexed as fast as blog IF I add a new page in one of my hand created RSS feeds. the main difference of indexing blog vs site is the instant publication / creation of RSS feeds. with RSS feed you have an instant few dozen backlinks pointing to an article = resulting in fastest possible G indexing as well. specially if blog is very active and very old with lots of traffic. you can create a comparable index-friendliness IF you publish each of site-pages by RSS and ping all RSS directories the same way as blog is published. for example I have exactly same G index efficiency for my photo album - but here again I have auto-created valid RSS feed and ping ( using pingler ) each time I add new photos.
I don't have much experience with website. I prefer to work with blogs. Since blogs are easy to update, I would say that they get indexed very quickly.
Blog has been answered here. By having a sitemap and having your feeds ping search engines and picked up by RSS feed websites it has proved to be a winner.
I prefer a website, but it does not have to be a either or situation, the two can be combined for a powerful affect.
The rss feed helps a blog to rank fast but the effect is temporary. Unless the pages generates inbound links, it will disappear quickly.