Well, I've read all three of those articles, and the first seems to be the most recent, the website/article is copyrighted up to 2011, but all three do seem to say the same thing: where you live, and your lifestyle, may have a very significant impact on whether DST causes an energy savings or an energy loss. Also, there have been only two noteworthy studies done since the 1970's, and both of those were on a single state scale, which is where it was noted that region may have a significant impact on the 'savings' of DST. Now, they do make mention of the fact that there are fewer traffic accidents (either with pedestrians or with other cars) during DST, and that extending DST to being year-round might make a significant long term benefit in that area. There are also indications of other possible economic benefits from the DST. The third article though does point out that the disruption in biorhythms, especially in the spring, may actual be hard on your health, and that from a health stand point it'd be best to not have a time change.
All in all the three articles just point out that a proper, comprehensive study of all of the costs/benefits of DST, both on regional and national levels, needs to be done, before anything specific can be determined.
Oh, and the 'savings' from the recent extension of DST are so small that the average statistical variance is actually several times greater, meaning it might be a loss and not a savings, but is so small that it's impossible to be sure.
So now where back to where we were before, a lot of folk lore, hype, and facts that mostly predate the majority of us (I only go back to the early 1980's), which means that at present 'opinion' is all we've got to go on, and that allows a lot of variance and little usefulness.