You forgot the option of "no framework, I'll build it myself and have ultimate control".

It's not rocket science, it's HTML and CSS, and you don't need a framework to have uniformity or responsiveness.

Your site could be made up of a bunch of jquery plugins too, and stock library graphics, and is your content rehashed too?

div class=span4 is nothing more than a table-based layout in disguise. Spans and rows are not inherent to divs. You're adding a layer of new rules that doesn't complement the technology you're adding to. You may as well be building with an old fashioned table based layout.

When I view source of some of the flagship bootstrap examples, I see stuff like this... empty divs either side of the logo graphic. I remember doing stuff like this with tables back in the 90s. Spacer gifs inside the empty table cells. But in this case, it's a class.

<div class=span4></div> <div class=span4>logo</div> <div class=span4></div>