You may have missed this one..........or the next.
Firstly, I am a "FIRM" believer that divers should use equipment that they prefer, and what is comfortable for them.
My first advice is to plan for the future, and buy gear that is modular, and be used for different applications down the line...(Pun intended.)
Including....your computer.
His advice to me........Shearwater Perdix.
I had a Uwatec wrist mount with A.I. that I dove with for about 5 years. It was great computer, and never failed, and never got hit by shrapnel.
A majority of S.C.U.B.A. gear for the most part, is purchased by Name brand, and "Color."
At no time did i say " Buy a Shearwater!!!!! You have to have one, only cool divers wear Shearwater, Etc.
Regardless, of the Make, or Model. A transmitter adds a "Failure Point." more so, than a "Stand Alone." computer.
My post was more extrapolation.....than anything.
Cheers.
Try and surround yourself with positive experienced divers that will talk with you, and help you....Not divers who will judge you, and/or talk down to you.
I think, I'm adding this to my signature.