Opera has been my browser of choice for some time now. A part of that reason is the Workspaces feature, which is the absolute best tab management solution on the market.
Another reason why I prefer Opera is that it offers plenty of extra features without making the browser feel overly bloated and heavy. Although the browser does tiptoe up against that bloated line drawn in the sand, it never actually steps over it.
One of the features that might put a smile on your face is called Pinboards, and it's exactly what you think it is