Less than ideal 4G speeds
As per Speedtest.net I am averaging around 7Mbps down and 1Mbps up. I can't say it is my location as I have taken tests in different parts of town.
Further, I have an HTC One that is averaging around 20Mbps down and 15Mbps up.
I have flashed CM10.1 nightly, but have gone back to stock via ODIN.