I just went from LiquidSmooth 3.0 Official to AICP. So far I like it. Still settling down so I can't speak to battery life but it is really smooth. Google Camera works, no issues with Bluetooth. Same prob with Google Hangouts that I had with LS but stock messaging works fine. Still sorting out signal strength for 4G and wifi. Lots of customization between AOKP and AICP.
Correction...Google Hangouts does work on AICP and my phone.
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Android devices: Samsung Galaxy S III running AICP 5.0 (retired phone: HTC Thunderbolt running InfectedROM NuSense Eternity); Nexus 7 running SlimKat, HP TouchPad running Milaq CM11 nightly, Sony SmartWatch 2