CED M II. I've posted my reasons before, and if you use the search function, you'll find this question answered a number of times, including my opinion and other different ones. You can also
scroll down here to read Father Frog's opinion. He's come to the same conclusion I have. But don't skip running the board search ("Search" in white letters in the blue bar below the address bar on this page, above) to see what others think about other units.