I was in BJ for a week with family in end of June. Went to Bianyifang and Da Dong. This was my first time in Bianyifang, while my last time in Da Dong was probably 10 years ago or so.
Da Dong is vastly changed vs. 10 years ago. Though location is the same (Tuanjiehu), but is now much more upscale. I actually like the old feeling better, more "traditional". The food this time around also was not as good as I remembered.... too much show and less in substance. I actually find the duck at Bianyifang better, more tasty.