Does anything other than power armor actually improve your survivability at all? There is an astronomical difference in armor rating on power armor (800 ish or so for for an early set) vs a full set of combat armor (100ish at most).
Not knowing how armor rating works in this game, but having done non scientific tests I've concluded that armor other than power armor = pointless. Go with with looks best.
Playing on survival difficulty, I use command console to bring 1 super mutant at my location. I stood point-blank infront of it naked (no armor) and let it attack me. I died in 7 seconds on average (repeated this 10 times, average lifespan was 7 seconds). I then put on full metal armor and did this same test (repeated 10 times), I lived almost 8 seconds (7.8 to be "exact"). Then I put on full combat armor and repeated again 10 times, I lived almost 8.5 seconds on average.
Then I put on T-45c power armor, repeated 10 times and my life expectancy was 38 seconds on average.. clearly a vast improvement over naked.
However, full combat armor vs naked increased my life expectancy by 1.5 seconds... I dont know what their armor formula vs damage is in this game but it clearly makes armor other than power armor completely useless. (also makes toughness perk utterly pointless since +10 armor per point from it amounts to basically nothing it seems).
Keep in mind that even power armor that gives 1,000+ armor lets through LOT of damage in survival difficulty vs simple enemies like raiders with pipe rifles.. so a suit of combat armor that gives 100 armor in comparison is basically offering 10% of the protection of power armor only... In otherwords, nothing. You're better off wearing clothing that you like best aesthetically and relying on generous doses of stimpaks, food and other drugs for survivability, not armor.