Like a few people in this thread, I was a decade long user of iTerm2. Can't really remember what was the reason to research other terminals, but I did and among those I tried, WezTerm was the clear winner.
I vaguely remember my main requirement was being able to configure CMD+D and CMD+SHIFT+D as split panes vertically and horizontally as I wasn't willing to retrain my fingers to learn new keystrokes for that. Within a version of two after I switched (back then, those were weeks or less apart), all my complaints were resolved and I never looked back.
My config is fairly minimal, but perfect for my needs. What else can one want?