Old IB J is much worse than LA. New IB J was to have been their F replacement and promised to be much better. Reality is yet to be determined, but IB has decided to keep F and not remove it from all planes. Whether this has resulted in a downscaling of the new J is unknown. The seat rollout schedule is very slow, unclear that enough of the fleet is converted by end of 2005 to guarantee all flights EZE-MAD will have the new J. So there is risk in getting the old J (known to be bad) and also risk as to whether the new J will be competitive with LA (I think it will be, but this is IB, so who knows?). They do have a good F service, so the potential is there to do a good, even great, J service.