Custom ROMs for Optimus G (Sprint)

I posted several weeks ago about upgrading to the Galaxy Nexus (Sprint), but it reached end-of-life before I could upgrade. (It was pulled literally the day before I went to upgrade).

Anyway, I'm considering upgrading to the Optimus G (Sprint) and wondered if any Verge readers had suggestions for custom ROMs. The internal specs on the Optimus G are identical to the Nexus 4, so I'm hoping that this phone will see some significant ROM development.

If you have the Optimus G, what ROM are you using? How's LTE? Battery life? I'd love to hear your thoughts and recommendations. Thanks!