If you pop over to the "Other North & South America Frequent Flyer Programs" forum, there are many discussions on LAN business class. Here is one link:
http://www.flyertalk.com/forum/other...n-airline.html
I flew LAX-LIM-LAX in late Nov/early Dec and thoroughly enjoyed the new business class seat and AVOD system. Howwever, as expected, LAN service was not up to par.