Hay guys, we are talking about basic recreational computer (i200/i300). Any of these would be adequate for the entry level Diver. If your concerned about algorithms or conservatism these are not for you. I work with over 3000 divers a year on our charter boat, the two computers subject and others would handle all their needs: depth, Dive time, N2 load, ascent rate, and safety stop, and EAN if required. To the average recreational Diver none of the high speed low drag stuff matters, hell most don’t understand basic dive physics. Lighten up.....