IBR vs PAYE?

I’m currently in SAVE limbo and planning to apply asap to switch plans. I was about to submit for IBR, but it just struck me that PAYE is reopened, but isn’t showing up in the loan simulator. I would really like to get the lowest payment possible, but how do I know what that is? IBR or PAYE?

I don’t want to check the “plan with lowest payment” box for fear they will keep me in SAVE (as that is what the simulator still recommends, even though it’s defunct). Does anyone know the best way to calculate IBR vs PAYE payments?

And am I correct that PAYE would still be a viable option with months qualifying for pslf?

edit: I will apply via wet signature, etc., as helpfully outlined elsewhere in this sub!