I had the most luck with shotcut. I've been meaning to try kdenlive again though but there were a few fx I needed that immediately apparent in shotcut that I could not find quickly in kdenlive.
I suspect kdenlive has it covered but timelines dictated that I not change horses mid race, and I haven't got back to retry.
Basically, either is good!
I actually want to give kdenlive another shot. But since I already figured out the keyframe mechanics in shotcut it was a too tall an order to relearn a new WY to do it in short order (clock was ticking for me to get a video done for a kid's b-day!)