Kristina, I went through that road before before I bought my dive computer, everyone tells you about their actual experience that their computer is the best which brought me to recluse that almost all sports of computers are good enough. And by the way, what do you mean by a good dive computer? What makes a dice computer good our bad, to me a good dive computer is easy to use, easy to read underwater with big digits, conservative; which prefers to be on the safe side when calculation the nitrogen saturation in your body, and finally, user friendly for operation and battery change. I found all those in Cressi Leonardo., but the only shortage is that it is not air integrated, that means, you cannot hook it to your scuba tank through a pressure sensor. Note there are others like the sunnto D9 for instance is much more expensive but had many other options that you don’t need as a recreational dive. For instance you can hook it to 4 air tanks to monitor you’re buddies or students if you were an instructor.
I’m satisfied with my cressi Leonardo and when the battery dies, I’m gonna change it my self using a coin.