I spoke with a couple of alumni from a school for which I am applying. They strongly recommended to use a professional consultant service for the proof-reading of the essays, resume and references.
Could anyone share their experiences with such services? Could anyone recommend which company to use?
Don't know which, but you should at least get free consults to see if you buy what their selling. They all have stated that they have experience getting low GMAT/low GPA into H/S/W. But those people are probably like War Veterens and Medal of honor recipients. Just make sure you think they are gonna put some time and dedication into you application and that you agree with how they are trying to market you for business school.