You have a choice of two basic roms other than the stock Xoom rom that you have now. You can stick with the Honeycomb OS and then the Moray Rom and/or Odachi kernel are highly recommended. Moray is for wifi and 3G only. There is also a newer 3G/4G LTE Rom if you have that Xoom model. Then there is the Eos (or the XoomZone) ICS beta Rom which is being updated through nightly builds. ICS (Android 4) is so stable, fast and feature rich, that as much as I love Moray/Odachi, I wouldn't willingly go back to Honeycomb. If you have a wifi Xoom you will flash the Wingray nightlies and for a 3G/4G LTE Xoom, you will flash the Stingray nightlies. Eos roms will now include the camera and HDMI binaries from the Chinese build, so we've got almost everything, plus some great Tiamat/Eos features. Exciting times!