I have a Oceanic VT3 It`s larger than the Atom 2.0. Aside from the size difference they are very similar. If you`ve not planning on wearing the computer as a watch the size of the VT3 may make for better visibility. Other than that I think the Oceanic computers are a great product. I`m very happy with mine. After logging 6 dives with it I found according to the log the communications between the transmitter and computer lost communications only once and reestablished the within very next logging cycle of 30 seconds (probably a lot less since I never noticed it during the dive) The PC software works well and allows for the addition of a plenty of info to the logs and even adding photos to the PC based logs. The logs can be printed out for addition to your hardcopy logs as well as manually adding dives to the PC logs to have a complete PC log of your dive history.