The site you point to states they recommend a fee of get it into
the next few blocks. Bitcoinfees gives a recommendation for the next block. It also shows graph to let you decide other options, though i wish they'd show the total fee calculation for each band, not just the lowest 0 block wait.
Right now bitcoinfees was showing 25 sat/b for getting into the next block.
Half of the block is made of transactions under 10sat/b and that website claims you should pay 25sat/b for getting into the next block?