Great watch, I love it, even though it is worn only occasionally in my rotation scheme !
It suddenly stopped about 2 years ago, so I sent it for service to IWC (specifically without polish, as it is in very good condition) and I think it is back on track for a few years.
Overall an excellent watch I love the titanium cold and light feeling, in stainless steel the weight was crazy so I am glad I went for the Ti version. To be noted (if I am not wrong) these Aquatimers were the last IWC in Ti.
Regarding depth I went around 5 meters (+/- 15ft) deep in apnoea this summer, it seems that this is as deep as it gets with these desk divers
Lastly, I would say that the newer IWC do not appeal to me as the series of these days, but here it is personal tastes !