The APs I've completed as GM are but one:
Serpent's Skull - Players had a blast. Was a lot of work, but worth it in the end.
The APs I'm currently running as GM are two:
Kingmaker - This campaign will be closing on the completion of its third year at the end of the summer, and we should be finishing the campaign about that time as well. We just completed Book 5, and there are a few things to do before Book 6 can begin. Everyone has loved this AP. It's been an absolute success.
Rise of the Runelords - We gather to play this one about once every 4-8 weeks. It's the first AP we ever started in PF back in 2010, and we are at the very end of Book 5. Players have enjoyed it despite the rather hectic scheduling through the years.
The APs I'm currently playing in, but that are not finished are one:
Jade Regent - I've been thoroughly enjoying this one. I've enjoyed the Asian flavor thus far, and the group has been a great deal of fun. It helps that I am now an enlarged dwarven magus using the Hammer of Thunderbolts. Joy!
The APs I am getting ready to run as GM are two:
Shattered Star - My group and I love all things Thassilonian, pretty much from our experiences with Runelords. Thus, this is the campaign we will be starting when Kingmaker reaches its conclusion.
Carrion Crown - I also have a group that enjoys the old Gothic horror schtick, which makes this a no-brainer for them also. Will be looking to run this one after Jade Regent has concluded, probably about the beginning of next year.