You know what dude, I'm not even going to try to blow smoke up your backside. I have a Galaxy Nexus(extended battery!)..anytime I used that thing with LTE and the screen on it would eat through the battery..sometimes reaching 50% in 20 minutes. HTX 8X...same uses maybe 10% at most. It's been suprising...so I'd urge to keep trying. I also followed the battery saver guide closely.
My settings: pretty much everything is set to ON, except Tap+Send and Bluetooth. I have location and feedback enabled. No Skype. One push e-mail account (GMail set as Exchange server).
Disable Attentive phone, read my battery tips in the 8X Forum.