I just received a sample unit of Meridian for testing a few days ago, so will publish a review in a few weeks after testing it in different conditions. So far I did not take it underwater yet, but the first impressions are very good. Outstadning look, it looks exceptionally solid. Perfect craftsmanship and very stylish. On my mind it is the best looking freediving computer I ever saw. You can quietly keep it on your writst even at bussiness meetings or at high-class parties. Even my wife, who is no fan of watches, and even less of diving computers, was quite impressed.
I saw some complaints about the wrist band, that some people consider too weak and are afraid it would break quickly. In contrary, I like it quit a bit, and do not think it breaks too fast. It looks and feels much better than for example the one of Suunto Mosquito. That one indeed broke on me twice, despite looking much more clumsy. Additionally I could not really wear it on the dry land - the sweat cummulated under the wrist band, and it got itchy and smelly just after a few hours of wearing. I had no such problems with the band of the Meridian after having it on my wrist for three full days. The rubber band is profiled, so the skin can still breathe nicely under it. In any case, if you don't like the rubber band, you can order a nylon band that can be used even on thick wetsuits.
So far I did not study the manual, and as I told, I did not test it in water, so cannot speak about its functionality much. The menus are relatively intuitive. Although the structure of the menu differs from watches of other manufacturers, it is not too difficult to get a quick grip on it even without reading the manual.
I just did not find yet how to display the heart-rate value. So far I have the impression that you can only see it when in the diving mode. It looks strange though, and would be a bit disappointing if the HR monitor function was limited for the underwater use only. I will have to read the manual better, or ask the Uwatec people.
I just downloaded the software for the data processing, but did not install and test it yet. I´ll post some comments and charts later.
I am also not sure yet how the alarm performs underwater, but the dry daily alarm is not too impressive. I do not think it is louder than the one on Suunto D3, Mosquito, or some other computers I saw, so I am afraid the underwater alarm won´t be especially loud. I´'ll report later about it.