I had spoken to 7/8 consultants before I paid strategy4gmat to help me with my ISB application, and I found that these people were EXTREMELY EMPATHETIC and PATIENT with me, and I spoke with Abhishek from Strategy4gmat who had a clear idea about how my story blueprint would look like so I was v amazed by the fact that I got to speak directly with my consultant instead of a sales executive and after I paid, I was given unpalatable support with my application with Tarun (ex sr. member ISB adcom) mentoring me too. I'll be honest I was like really anxious so there was this consultant Umang (ex-ISB now Microsoft) who helped me out a lot with revising even the LAST COMMA in the essay, i was that nervous lol. I don't wanna comment on the other consultancies mentioned or quote the 7 people I spoke to, but I had a fantastic time with strategy4gmat.
I'd recommend that you have a word with the mentors and take your call as to whom you wanna choose as a consultant.
All the best buddy.