Light Armour is cool I think. Besides by level 20 and up you've got so much health anyway...
My guy strolls around in the Wasteland Settler Outfit (the crummiest looking outfit) which gives 1 DT + 6 DT from toughness perk twice.

He can still beat the cr*p out of most things using only his trusted Love and Hate knuckles :mohawk:

Well it practically never degraded (women ) and had 45 dr max hp which is good but the normal T-51b power armor you get from you gotta shoot them in the head or from killing Mr Crowley (i think thats his name) has 50 DR but degrades faster.But technically in terms of combat theres better in fo3 alone so PWND!!.And both had same bonus's.

If one has Dead Money, Light armor wins due to the Light Touch perk, except in VERY sticky close quarters situations where you take a lot of damage very quickly from multiple sources. When taking on Caesar, Brotherhood Paladins or a large pack of Nightstalkers, for example.

If one does NOT have Dead Money- and there are more such people out there than you realize- the difference is purely one of tactical preference. If you're a sniper type, go with light; if you like your fighting up close, go with heavy.

One benefit of heavy armor is the fact that more enemies now use explosive weapons (Grenade Rifles, missiles) and these weapons have been made more effective. Explosive weapons have a high chance of crippling limbs. Taking less damage means taking less damage to limbs, which can be pretty important for characters who took Small Frame.

Heavy... why the hell would I ever touch light armour? I'm a [censored] walking tank. Go ahead and run around me while I use your weaponry to massage and give my Enclave Power Armour a sun tan. Repair!? What the hell are you guys smoking? This [censored] is invincible already, I don't think in any New Vegas play through ever have I ever had to repair power armour unless I got the armour in bad condition.

Edit
Stealth? Pffftt.... I can already hide on enemies in power armour quite fine. Why do I need light armour?

Yes the winterized is bar none the best because INFINITE HP what more do you want?? Its very durable and looks rather nice.