I live in Barcelona, and in summer, below the tree line, I use a Integral Designs 8x10 tarp and a Six Moon Designs Serenity Bugnet- it works great. Total weight without stakes is 600g. Here it is in the pre Pyrenees:
For higher altitudes, above the tree line, I use the same SMD Net under a Golite ShangriLa 3. Total weight without stakes 850g.
I bought all this before the MLD DuoMid came out, and if I had to do it again now, I'd probably go for the DuoMid Silnylon, and save myself 200g on my above tree line shelter. The cuben version looks tempting, however- look up Brian Frankle's Idaho Trail blog to see how he fared with the shelter in Cuben.
I like a big shelter and am prepared to carry the extra weight as I don't do huge miles every day, everybody's different- I can't stand lying down in a silnylon coffin, or using bivys. YMMV.
I have a few MLD things, and they are all first rate- good luck with your decision. I hope this helps.