Hi there,
I will see if there are other sources for info or references from Erin, will follow up this week. I also encourage you to keep in mind that while GMATClub.com is a great resource with extensive info and we do get a lot of clients who learn about us on GMATClub, a large portion of our clients are just not on GMATClub at all (and therefore not posting reviews etc). While it's always great to get 'reviews' on goods and services (I'm right there with ya, love to look up reviews!), it isn't always as easy to find extensive 3rd-party hosted reviews on every consultant in an industry like admissions consulting, simply because clients either need to be already active on a site like this and think to post/review, or be encouraged to do so by their consultant (which some consultants encourage, others do not), and in actuality there are a lot of MBA applicants who don't spend time on specific websites like GMATClub, or use a variety of GMAT prep sites and reviews can be fragmented or non-existent. (Plus if you think about it, admissions consultants have not been around as long as say, hair stylists, or even physicians-- and there are plenty of those that you cannot even find reviews for online, even though we would all love to see thorough reviews on every service professional we go to). That said we consistently send feedback surveys to every client of ours and do track feedback and client satisfaction, and we encourage you to chat with the consultant you are thinking of for your free profile eval before you sign up.
I'll see if there is any further info I can provide at all and in the meantime I do encourage you to schedule your free consult. If for some unlikely reason you don't feel the consultant you work with during the consult is right for you, you do not have to stay with them for the actual admissions consulting, we will work with you to be sure you are comfortable with your consultant.
On a side note, I believe Monica and Helen are both mentioned among the reviews here on the site, if that is at all useful.
Best,
Jen