I've literally tried every single QB that's been released this year... Very few of them make the cut and even fewer stand out.
I've settled on the fact that I tend to lean towards slinger one over slinger 3. I only throw deep when it's going to be open so a little extra half second isn't an issue for the deep ball and it's so much faster short. Which is where you end up going if you're trying to beat the meta blitz.
So in the list of s1 quarterbacks I've been on the CJ kick for a while now. He doesn't fumble when you breathe on him like Rogers which costs more games than HRM wins (HRM is an unneeded luxury if you know your playbook well). There's just something about CJ's animation and his height and character build that works better with that release than any other s1 quarterback including Montana. And he's a real threat on the run too.