Could you list your window manager of choice and also which others you explored (along with any observations)? I'm sure at least a few people here would be interested.
I also used Fluxbox and Openbox and like both very much, but they are kind of basic.
Working with any of those is both faster and easier than any of Windows or MacOS, for me at least.
And not that anyone will see this now, but most people in this thread were responding to my "OSX and Windows don't offer powerful window management solutions" specifically in reference to my comment about floating windows. That's just one example of many things OSX/Windows doesn't allow the user to do.
Not to be too dramatic, but i3 has made me more productive, more focused and happier while working. I now fear ending up in an environment where using Linux isn't possible. It's really that good. But really, tiling window managers are that good.