As an airline with more than 100 offices in more than 80 countries, we have to find respectable law firms from all around the world from time to time to get legal assistance and the guide is an excellent resource to look for candidate law firms.
It is an objective and an impartial guide.
An international airline
I refer to the IFLR1000 especially with respect to jurisdictions I have no knowledge about. The main reasons: to find a good firm or confirm standing of a firm recommended by someone else.
I usually use the IFLR1000 in connection with a need to engage a local counsel on an M&A deal.
Corporate M&A lawyer
Listed international pharmaceutical company