The LG Optimus 2X or the T-Mobile G2X is the current favorite phone of the CyanogenMod team. In fact, Cyanogen himself uses this phone. All this, just because the handset does not have a locked boot loader.
The Cyanogen team has already started working on bringing CyanogenMod 7 to the Optimus 2x and the G2X. The CM team has even started cooking out CM7 based nightly ROMs for the handsets.
Since this is a nightly ROM, Optimus 2X and G2X owners should keep in mind that there will be some bugs and issues with the ROM.
CyanogenMod is the best AOSP based Custom ROM out there. In its latest version, the ROM is based on Android 2.3.x Gingerbread, and packs some useful features like Profile Support, Theme Manager and DSP Manager.
The LG Optimus 2X/G2X is the most powerful phone to be supported by the CyanogenMod team until now. Hopefully, the CM team will also support the upcoming dual-core monster the Samsung Galaxy S II. It has already been confirmed that the Galaxy S II will have an unlocked boot loader.
Interested Optimus 2X/G2X owners should head over to this link to download CM7 nightly ROM for their handset. For more information about CM7 on the LG Optimus 2X/G2X, users should head over to this thread.