You really need to just get one and try it, I advise to get one at the right price so you don't loose money if it's not for you.
My shooting is always done with the dial, if I'm setting up for speed I'll use a BDC turret and then I still have speed but I retail the ease and speed of a center hold without thinking about where I'm holding or where I held the last shot.
I've had issues with FFP in the timber using low power, pull up and yep there's elk but the reticle is MIA without good light, back ground or illumination. I also found I hate the thickness of the cross hair at ELR on top power, for me I can't pick that one spot I want the bullet to go, I feel like I'm aiming AT an animal not that precise aim point. I'll also use the SFP reticle to more accurately match the hold to the range.
For me my stressful shooting will be in the timber trying to pick up an elk fast and put a round through him, I want a fast center hold and an aimpoint that's just there, the SFP optic has been much easier for me.
I like the FFP optic for shooting where I'll be in the middle power range where the reticle is nice and crisp yet the reticle is at the smallest value.
It's all about YOUR shooting as to which is best!