There are a couple of reviews (Tone Audio being one and the other HiFi+ I think) comparing the two. Personally, I think the Diablo which I own (selling to upgrade to Scala) is much better than the Micro Be. Before I purchased the Dynaudio C1 a few years ago, I also auditioned that Micro BE and the high frequency hurt my ears. Hope this help.
JM Labs, Focal Diablo Utopia VS. Micro Utopia BE
Im curious to see if the Diablo Utopia Is really that much better than the Micro Utopia BE (8K vs 14K) or if it is mostly because of the declining value of the dollar and the higher cost to ship items these days?