Love DH's GPE. It's so freakin' stable, and it has all the AOSP greatness I love. I feel like I have a Nexus with this ROM.
Also, AOSP gives you so many options for Xposed, and I've gone a bit crazy with it. Here's my Xposed choices:
XBlast Tools (for Lockscreen Notifications & Appbar ONLY) and Gravity Box for everything else. Tricky to make them play nice together, but doable.
Heads Up Notifications - I don't like the Gravity Box implementation, the blacklist is much easier to use with this module
Statusbar Volume - to get the volume bar out of the way. Slightly buggy, but beneficial because no more annoyingly-located volume bar
Tinted Status Bar - so awesome if you take the time to figure out how to set it up
Xposed GEL Settings - wouldn't use the Google Now Launcher without it.