I have tried many of them except dwm at this point. This is not because I dislike dwm (on the contrary, I love the idea and its "if you can't compile me you don't deserve me attitude), but i3wm and dwm are all derivitaves, of well, dwm user modifications that either stay dwm (with patchsets) or emerge into something different (uh, Mosca, i3wm, awesomewm for sure, and many others of the pure C variety; I am certain XMonad and others follow dwm aesthetics and philosophy in a very general sense because dwm went backwards by throwing out the kitchen sink and going for pure, raw simplicity). If you try any of the derivatives, you will notice they usually take one dwm patchset notion and focus on it, or try different window management logic (many of the new one try b-tree sorting and management of windows). But they all focus on doing one window management style or feature, and doing it well for those people (my favorite example: stumpwm/ratpoision were very much unique and popular, spawning many look-alikes by eschewing the mouse altogether).

I use i3wm and really liked StumpWM (will probably return to it soon), but to make this dichotomy is to oversimplify and not realize WM systems usually focus on one-feature for the tool and do it well. Not all WMs are alike and that is why, as a StumpWM fanboy, giving control to another one arbitrarily (I think it is the only WM that totes that as a feature btw), shoes a very unique that I vainly believe lines up with mine.

Just my 0.02.