See, I dunno, cause Peter and Nathan are always very close, and the words " I love you, Nathan" and " I love you, Pete" come up about once an episode, so I think they express it more. Sam and Dean seem to be close through hunting, and Nathan and Lucas through basketball. Just a random question I needed some perspective on =D

1. The Winchesters.
2. The Scotts.
3. The Petrellis.

Never heard of the Petrellis so i cant really say anything abuot them. But i think The Winchesters have the best brotherly bond. Everything they have done together and Dean watching out for Sam when they were kids. And they wouldn't hunt together if they didn't love eachother. They really care about eachother, and loves eachother more than they ever gonna now. [I believe] And i think the Scotts have a pretty good brotherly bond too because in the beginning they were enemies (sort of) and than they got closer and they became really good friend. I mean look at them now practicly best buds x)

psh they'd die and go to hell for each other .. ♥ so no competition ;) (in my mind! lol)

I loathe OTH, so I'm not gonna say anything on that.

It's a different kind of love between the Winchesters and the Petrellis. When the Petrellis love each other, they REALLY love each other, and express it much more. But when the brothers are divided, there's really a rift between them.
The Winchesters aren't as touchy-feely as the Petrellis, but I feel the bond between them is much deeper. Even when they aren't together or are fighting, they still care what the other is doing and fight to save the other, they're always thinking of/looking out for each other, and the sacrifices they make for each other are tremendous. So while they may not express it as much as the Super Petrelli Bros, I think their love runs deeper (and people blame me for occasionally shipping Wincest!).

I would pick Sam and Dean everytime. They have such great Chemistry.
I would think they are real brothers,they act together Perfect.

Yeah Sam and Dean have been through so much together. Like Dean-girlx said they died for each other. Dean would have let the world end if it keept Sam from being a demon.
"He dies at leats he dies human."
They truly just want each other to be safe. Even if they make bad choices trying to help each other.

Don't even know who the others are, but it's the Winchesters all the way. They are much more realistic (I don't think brothers, as a rule, say "I love you" very often - it's that guy thing!). I also think their bond runs so much deeper. Because what they do is so dangerous, they've regularly had to trust their lives with each other. I think that has developed a bond that nothing else could touch - even if they do fight, that would never change. :))

Nathan has tried to kill Pete a couple of times so for me it's not really a competition!

I don't know who the other guys are. I do know the Winchesters are the epitome of awesome!

The Winchesters no doubt. Don't really know the Scotts coz i don't watch OTH and I've only watched season 1 n a bit of 2 of heroes and the thing that sticks out for me with the Petrellis is Nathan pubicly humiliating Peter so yeah Winchesters Best Brotherly Bond :D

These are brother's that have died for eachother time and time again, sorry but you can't beat a bond like that. Dean has even gone so far as to pull Sam's soul from Hell by taking over death's job. I don't see anyother brother's doing that. I don't think anyone can beat Winchester Love, dude.