Strength saving throws are the least consequential to fail (most in the MM are save vs. get knocked prone by a goat or something), and Intelligence saving throws are the worst (Mind Flayer, Intellect Devourer, Feeblemind).
I think that fighter/barbarian have the most to gain from the Resilient feat. Once they have proficiency in Wisdom saves, they can avoid the worst common effects. Failing a Dex save usually entails taking a huge amount of damage, which fighters and barbarians can soak up with their large HP totals.
I would never take Resilient(Int) unless mind flayers were the major antagonists of the campaign, in which case I would certainly take it.
I think that fighter/barbarian have the most to gain from the Resilient feat. Once they have proficiency in Wisdom saves, they can avoid the worst common effects. Failing a Dex save usually entails taking a huge amount of damage, which fighters and barbarians can soak up with their large HP totals.
I would never take Resilient(Int) unless mind flayers were the major antagonists of the campaign, in which case I would certainly take it.