Anyone working with JLL?

Been doing service for F500 entity through a 3rd party services coordinator and have been invited to go 'Direct' through JLL, anyone out there doing business with them? Contract looks less than desirable to say the least (ie 75 day terms, and that's just the tip of the iceberg) but also seems to give access to where the big boys play, and the pitch seems to be that we get on all of JLLs clients radars. If you have gotten into JLL as a vendor did it lead to more business? Was it worth the bureaucracy migraine?