Aaron came recommended by a local deals website where he has a giant thread helping people buy diamonds.
I had a general idea of what I was looking for and Aaron was always quick to respond (often less than 24hr). He's super helpful, patient, and looks out for your best interest as a buyer. I got the feeling that he won't upsell you on things that will have little significance on the final result.
In the end I went with a classic 6 prong round solitaire which my fiance loves. (She also gets lots of compliments about it!)
I wouldn't hesitate to recommend Aaron to my family & friends and when the time comes, will likely be getting our wedding bands from him as well.