If you are looking for a good Android 5.0.2 Lollipop AOSP ROM (What is AOSP?), then definitely check out the BlissPop ROM.
Based on latest Android 5.0.2 Lollipop, BlissPop is a highly-modified version of CM12, bringing you a ton of customizations including some features from Android 5.1. I know Android 5.1 just came out and one of the coolest features is its drop-down WiFi menu so you can easily switch your wireless network. Well, with BlissPop, you get pretty much the same feature with its Bliss Interface in Settings.