With the questionable quality issues I've been having with the latest ZebraLight products, I'm very glad to see the MDC is available in my favorite battery form!
With my SC52 out of commission for a while now I've been carrying a D25A and its really grown on me. It's sleek and slim shape is matched by my L10 219, but at the expense of a much slower (but simpler) UI. I've relegated the L10 to nightstand duty since that rarely leaves moonlight mode.
I've got a Xeno on order from the marketplace, I don't know if it will replace my D25A yet...