Hi, does anyone in the group here understand if there is a reason on a chemical level to use TF-4 vs. TF-5 for FP4+ developed in Pyrocat HD in a Jobo?

I have both on hand in a small supply and I would rather consolidate down to just one if it makes sense to do so. I have been using TF-5 on my fiber prints and out of habit, I have been using TF-4 since it came out for my Pyrocat HD negatives. I want to make sure I am not missing something.

Thanks

Tim