Why were you unhappy with the Mares. It looks like an interesting option albeit the most expensive one of the bunch.
The Mares did look interesting as it was the only wrist color computer with AI. But I kept running into software problems from the beginning. The first unit would not connect properly with the Dive Organizer (the Mares PC software). After spending hours attempting to solve the problem I sent it back.
The second unit looked more promising as the previous problem was resolved and it connected flawlessly to Dive Organizer. I took it on a solo night dive at Crescent Bay to check out the display. I found the fonts quite small and not as easy to read at night as I hoped, even with my bifocal mask. But then I uploaded the data from the dive to the Dive Organizer. Both the Dive Organizer and the Icon were set to Imperial units we use here in the US. I was shocked by what I was seeing. My tank was showing as 80 L, operating pressure of 3400 Bar, tank reserve of 10878 psi, and average gas consumption of 6.4 cu/ft/min. In other words the software was mixing Imperial and metric units and coming out with garbage. It was obvious no one had tested the software.
One other user on Mares forum reported each of the above problems, so I know I was not the only one. Email sent to Mares went unanswered, and when I got through to Mares US by phone, I was told to wipe the contacts and to remove the rechargeable battery to reset the computer, advice I know would not have solved the problem. Furthermore to remove the battery requires a special tool to mate with the two small holes in the battery cover, not provided with the computer. The software problems and the poor customer service finally tried my patience and I returned the thing.
The other issues were the heavy weight and large size of the wrist unit, and that the battery drained by 4-5% per day even when the unit was asleep. This means it must be always plugged in even when not diving.
I replaced it with the Galileo Sol, and it seems to me that Mares took the ideas from the Uwatec, simplified it and dummed it down, but in a sloppy way introducing some annoying bugs. The display is bright, but the fonts are not controllable and not that large. The display has a big dead space area only covering a part of the face of the computer.
The Sol seems to have a more complex interface and lot more options, but also offers more control. For example in the Sol for night diving you can use the Basic display with large fonts and keep the backlight on throughout the dive. It will do for now until Uwatec or Atomic come up with an OLED AI wrist unit.
Adam