I owned Elac 310 Jets. They were very nice. The Jet tweeter is fantastic, but the speaker itself is a little deficient in bass objectively, but subjectively it makes more bass than one would expect. Standard 2-way setup with an outstanding tweeter.
However, just because the M&D's have what appears to be the same setup, two way with a ribbon/heil tweeter, doesn't mean they're the same. The crossover points of each of these speakers is very different. The Elacs crossover at probably 3k to 4k, whereas the M&D's crossover at 900, 800 or even 700Hz. The goal is to make the ribbon tweeter more of a point source for the music with the woofer just augmenting the the bass. A more cohesive sound like a single driver speaker/crossoverless design. I haven't heard any M&D speakers but they're reviewed very highly. Downside is that they require big power to get bass from such small enclosures.
However, just because the M&D's have what appears to be the same setup, two way with a ribbon/heil tweeter, doesn't mean they're the same. The crossover points of each of these speakers is very different. The Elacs crossover at probably 3k to 4k, whereas the M&D's crossover at 900, 800 or even 700Hz. The goal is to make the ribbon tweeter more of a point source for the music with the woofer just augmenting the the bass. A more cohesive sound like a single driver speaker/crossoverless design. I haven't heard any M&D speakers but they're reviewed very highly. Downside is that they require big power to get bass from such small enclosures.