i subscribe to nearly all of these and can vouch for them being a welcome sight in my inbox. sure, a lot of the links are HN repeats, but some are not :)
That said, I see at least one item a week that hits HN an hour or two after us, and occasionally stuff that even hits HN months after we covered it ;-) So it's swings and roundabouts.
I wouldn't worry about that -- most of the really interesting (hacking/programming) stuff on HN isn't time sensitive. A tutorial/intro on <lang/stack/arch/design> that's great today, will be great in a year as well.