Filtering the loop content into different divs

Im building a site where each post will be a video, image or slideshow with some text added. Im wondering whats the best way to filter out the content into different divs is? I would like to seperate the visual content into one div and the text about it into another, so that I can style it accordingly.

I did something almost like this in another site, where I used a code to get everything with an img tag and put it into a certain div, and everything else into another, maybe this could be modified to output everything BUT paragraphs into one div and paragraphs into another?

Here is the code I used before: http://pastebin.com/fevE8hB7

Or is there some other smart way of doing this?
Maybe using jQuery with appropriate selectors to wrap my content into different divs?