Duff & Kronfeld, P.C. 11320 Random Hills Road, Fairfax, VA 22030

"David Duff helped me with a legal malpractice matter and was the consummate professional. He was prepared and detail oriented, treated me with respect and compassion, and was more than fair with his billing. I highly recommend David Duff."

"As a divorce financial professional, David Duff and I have worked on many cases together and I have found him responsive and professional. More importantly, he is meticulous in his document preparation - something critical to a good outcome (if the document isn't written correctly, it will not execute correctly). David's methods of negotiation remind me of an old TV show, Columbo. He has an 'aw, shucks' demeanor which my clients have benefited from as he negotiates very effectively on their behalf. Finally, David has been at this a very long time and is still one of the hardest working attorneys I know."

"Our firm hired Adam Kronfeld to represent us against the estate of our previous attorney who, we had discovered through a FOIA, had conducted himself in ways that were demonstrably injurious to our firm, and who even billed us for actions he took directly againt our instructions that he promised in writing he would not bill us for. It took Adam nearly four months to even write the first letter - and that one was mostly written by me with some edits by him. He did not send this letter until we had to go over his head to his boss. We received responses from opposing counsel that Adam was forced to send us that discussed how difficult it was to get ahold of him and the excessive amount of time it took for him to respond - so even opposing counsel saw this. He did not even begin negotiations in earnest until I went over his head again to Mr Duff, who was MOST unpleasant, and who billed us $800.00 for the task of having to tell him that his own employee was causing delays. Adam subsequently removed that amount from our bill. This firm managed to take a case that should have taken a month and turn it into an almost 8 month ordeal. I would never recommend this attorney or this firm."

"As a practicing attorney in Maryland, I regularly need to contact VA counsel to discuss cross-jurisdictional issues on cases. I also generally need a trustworthy firm and Virginia lawyer for referrals since I am not barred in VA. I can honestly say that I highly recommend David Marquardt. I know when I refer someone to him that they are in excellent hands and that David will take care of them and provide the best legal service available."

"I am a single mom and hired David Duff for custody and child support. We managed to avoid court by his negotiating an agreeable settlement which saved a great deal of money, time and emotional stress. I will be forever grateful for his help and support through this most difficult time and would highly recommend him and The Duff Law Firm to others."