I like them, Frank's artwork is excellent and I think Johns is doing a very good job at updating Captain Marvel for the 21st Century and having it be faithful but also not cheesy as hell.
I agree with Punchy. The Captain Marvel backups have been my main reason to keep purchasing JL.
As for my ramblings on what I think they got right:
- Batman family books, including Red Hood (it's kind of stupid, but it's a hell of a lot of fun). All of them except Dark Knight. Batman & Robin is the best of the bunch
- Supergirl, though I dropped it during the H'El on Earth arc and haven't gone back
- Animal Man, Swamp Thing, JL Dark, and Phantom Stranger are all really good. Constantine's first 2 issues were enjoyable, though not as good as Hellblazer was.
- Green Arrow has finally gotten good under Lemire
- Green Lantern & Corps started great, but I dropped them when they started crossing over with the other two titles
- Suicide Squad started as a really fun book, and has only gotten bad in the last few issues. Hopefully the new writer can turn it back around.
- Earth 2 & World's Finest are two of my favorite DC books at the moment.