>AOSP is okay but it does not feel as snappy as when I tried iOS for which I blame Dalvik. Dalvik hasn't been used since Android 4.4. It was replaced with ART

>AOSP is okay but it does not feel as snappy as when I tried iOS for which I blame Dalvik. Dalvik hasn't been used since Android 4.4. It was replaced with ART in 5.0, which was released towards the end of 2014.