I'd say most projects I do leave the client in better shape than before. There have been some failures, most often as the client didn't really know what they wanted us to do or didn't want to implement the results for whatever reason. The spotty graduates fiddling with spreadsheets can still happen but to be honest, the biggest mistake I think people make when they buy consultancy is they buy the brand and not the people. Consultants will propose a team to you, all you simply have to do is to insist that the people whose CVs are put in front of you are the people who operate the assignment. Unfortunately the biggest game consultants play when pitching is putting forward experts for a job who they know will not be available, plus often their track record is taken from anywhere around their company and not always based on the person pitching to you. Insist that you have relevant track record of all consultants in your ITT. When it comes to deciding which consultancy, pick the best team and not. They'll try to negotiate saying they need a get out clause should people not be available, but insist that you have the right to cancel any contract should key people not be available (note: also be very clear on who will operate day-to-day and who will be the "experts" who parachute in for senior meetings ). You do seem very sceptical of consultants but ultimately your satisfaction from us comes from buying smartly and then cooperating as much as you can with the people you've chosen.