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I am trying to stay <$500. I am quickly realizing that watch sized DCs are more expensive, and yes my only reason for that was to not have to pack a watch on vacation. I don't think I will ever do any tech diving, but may eventually move to nitrox. If I am not going with a watch sized computer, I would say the bigger the better then (within reason). Any suggestions around the $400 mark?
I just switched to shearwter petrel in part because of the bright display.
FWIW, I am a fan of air integration. Very convenient, and it's an extra data point when you download the dive data to your PC. As you have already experienced, not everyone shares my opinion on the topic.
I switched from a watch style (atom 3.1) to a Petrel after breaking the atom twice. One thing you want to consider that I had not is that the watch sized computers are not constantly backlit.
When doing a night dive or even in horrible viz, you have to hit the backlight to monitor your assent rate and/or countdown timers for safety/deco stops. It is not necessary of course, but it's a pain to drop your power inflator, and hit the light over and over again during ascents. Or even constantly hitting it during safety stops to check on the depth/timer. You don't realize this until you actually start doing night dives. Having something you can easily reference even with your hands full is great.
That said I really do miss air integration. But the ability to extend my diving into tech with the Petrel more than makes up for it.
On night dives shining your light on the display works, too.