Check out selfbuilt's review here: http://www.candlepowerforums.com/vb/showthread.php?t=210904 Both of them are included, along with several other 2AA models. It looks like the L2D Q5 has a significant edge in runtime on Turbo, at the cost of just a little overall output. The LD20 offers a bit more throw, but if you need more throw than an L2D Q5, it's probably better to just move on up to a light that uses 18650 cells and be done with it.
