Seeker...first off..
H O W D Y ! ! ! and welcome to ScubaBoard. Hopefully you will find this group to be as warm, supportive, and wacky as I have found.
Where are you in your dive training? I too am working toward learning to penetrate wrecks. However, I am not certified for wrecks just yet, but will be taking the classes in the next few weeks in anticipation of diving on the wrecks off of North Carolina.
Currently I am packing a Genesis ReACT and have found it to be more than capable for all my diving profiles to date, both fresh and salt. There are several here who use Cobras and Vypers, so I too am looking forward to the responses.
In regards to Air Integration, I do see the benefits of having such a system for recreational dives, but am on the fence when it comes to technical diving (such as entering shipwrecks). My plan is to learn all I can about gear from my instructors and ask good questions when appropriate.
Again, welcome to the board and we look forward to your participation!