Positive: Professionalism, Quality, Responsiveness
We had 10 offers on the house we ended up with (after he spent a few half days showing us a ton of houses) and had one offer not accepted. He makes sure that your offer gets noticed by highlighting the strengths of the offer. His experience in realty is obvious throughout the whole process.
After we accepted the offer, he helped navigate all of the details after the "offer accepted". He communicated at all times and was always willing to answer our questions.
I am not overselling him when I say he is an awesome human being and you can't go wrong with listing a house and or buying one with him. My sister is working with him now and is equally happy.