Series To Keep Reading

So before I started reading YA, I never really read many series. But it seems to be a popular format in the genre, or maybe I was just reading the wrong kind of adult books, and now I'm in the middle of a billion (+/- a billion) series. Some of these series are complete, many aren't. Still, I figured it would be fun to make a list of the series I love enough to continue reading. A lot of them seem to be around book 2, and I'm terrified of book 2s because they might have endings like Catching Fire, so I may be unintentionally avoiding them until book 3 is out. But they are still awesome and should be noted.

Also, I really like lists. This is no particular order.

1. Requiem by Lauren Oliver (Delirium #3, release date: February 2013)
2. Insurgent by Veronica Roth (Divergent #2, release date: May 1st 2012)
3. Fever by Lauren DeStefano (The Chemical Garden #2, Released)
4. A Million Suns by Beth Revis (Across the Universe #2, Released)
5. The Calling by Kelley Armstrong (Darkness Rises #2, release date: April 10th 2012)
6. Rebel Heart by Moira Young (Dust Lands #2, release date: October 30th 2012)
7. Just For Fins by Tera Lynn Childs (Fins #3, release date: July 3rd 2012)
8. Promised by Caragh M. O'Brien (Birthmarked #3, release date: October 2nd 2012)
9. Fallout by Ellen Hopkins (Crank #3, Released)
10. Flock by Wendy Delsol (Stork #3, release date: September 11 2012)
11. Waking Storms by Sarah Porter (Lost Voices #2, release date: July 3rd 2012)
12. The Blood Keeper by Tessa Gratton (The Blood Journals #2, release date: August 28th 2012)
13. Underworld by Meg Cabot (Abandon Trilogy #2, release date: May 8th 2012)

Are there any series you are in the middle of and want to finish? Any book 3s you're anxiously awaiting? There are so many other series I want to start, but part of me feels like I should wait until I finish, or at least catch up on, a few of these. Do you have the same dilemma?