That is way too big a triangle. I would drop it to 6’-7’, especially since they are such small speakers. See how this effects the sound.
All of the speakers you listed will be significant upgrades to what you have. But of different caliber.
I am faniliar with the Martin Logen in general and I would never characterize them as in lacking detail. This must be because of your triangle. Granted they are very inexpensive… so upgrading makes sense.
Each of the speakers you have listed have very different sound. The B&W are going to provide a real bass kick, with some strong treble. The ML should provide great transparency and detail with a good punch if properly sized and placed, the Focal will be something in between, a bit more coherent.
I would work with your current system to get it working right… in a much smaller triangle, and optimize it. You have good equipment. Then look at scaling up… ML if you like them with, but want greater scale… or on of the others based on sound.