Originally Posted by PeteHski

For me at least both those calculators recommend very similar pressures. Silca 69/71 Sram 67/71
I don't fuss over a couple of psi here or there. I don't find it that sensitive.
The only big variation I see between the various calculators are those that recommend significantly lower front pressure based on the 15% drop rule e.g. I've got one that recommends 52/79 with a 60% rear weight distribution.