For me it's light armor, for several reasons.
1. I think the Reinforced Leather Armor is the single best looking peace of clothing in the game
2. You can just run faster, even moreso with Travel Light as a perk. I'm so used to it, that I can't just bear the slow movement of heavier classes anymore.
3. When it gets to weapons, I'm mainly a Guns/EW hybrid, who really despises getting his hands dirty in ugly melee scenes.
Therefore of course, my build is set around crtitical hit ability, making Light Touch as a perk a no brainer.
To make up for my DT deficit, I can rely on chems and a high survival skill.
With some proper buffing I can nearly reach Power Armor levels of DT, while not losing my Light Armor advantages.
The only downside is having to see a doctor every couple of days to get of my shakes, but that about it.