Great question Garfield,
I would have to wear each on a scale and find out. The MDLR feels heavier as it is solid birch wood than the Doepfer monster case.
The Doepfer base/monster were expensive together cost close to $2800 but with discount cost me about $2300 and not cheap but I figure for all those expensive modules the solid power supplies and case will be worth it. Now I won't have to buy another case for a while until I fill up the 300+ HP and 140HP in the 6u case free.