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If you like the bigger style of the Mares HD for viewing purposes, go with the Uwatec LUNA (pricepoint). It's Easier to use a read. I actually put about 40 dives on the Mares when it first came out and under great lighting conditions I actually found the color screen hard to read at times and using some of the options were difficult as well. I have experienced none of these issues with the LUNA. The other computers to check out are the Oceanic VT4 & Atom. For viewing purposes you can't beat the OLED Display on the Shearwater!