I wish ILM had lead on the FX work. There is no other effects house which is better. *sigh*
This article from 2010 is encouraging though:
Cameron and Weta awarded some 600 shots to other visual effects shops, including Industrial Light & Magic, which took on over 180 shots. The ILM shots were carefully chosen as to not contain any hero animation work (which was being completed at Weta), and heavily featured vehicles, certain Pandora environments, and battle sequences. The division of labor was crafted to be as logical as possible-- but it still required an extraordinary amount of coordination and cooperation between Weta, ILM and other vendors who shared assets, in order to make the work as seamless as possible. In the final film, you might see two Weta shots, then two ILM shots, then Weta and ILM shots back-to-back. We spent a great deal of time ensuring a seamless blend of our work; our hope was that audiences felt no perceptible change in quality, texture or feel between the different vendors' effects shots.