Let guess it was an Azimuth, an SCR that was my first try in Atlantic coast of France. Discovery and training in July 2004, I bought the unit 2 years later (the one I previously trained with).
Now went to CCR Inspiration, bought the Evo+, upgraded my diving to Trimix.
8 October 2005 First Mod 1 dive at Crap'n rainy (might have done a try dive before that). Inspo classic that's still going though its a bit like trigger broom and has just evolved into a 2020 vision.
April 1998 Drager Atlantis, Little Cayman. The next year I learned about mismatching a richer nitrox orifice with leaner nitrox mixes to keep the damn thing from burping all the time. What an idiot I was. Nothing bad happened, but I do remember being very winded after a medium exertion swim and that convinced me to look into CCR, which led me save up for and buy a Prism in 2002...