I have nothing but good things to say about Dragon Seed! I walked in and asked for a dress the day of - they worked so hard to find one in my price range and with the style I wanted. Definitely come here if you want high quality qipao/cheongsam.
Also, I do not agree with people’s gripes with customer service. Being in Chinatown, you can expect experts to have strong opinions on clothes, but it comes from a place of care/respect. If you advocate for your style preferences and you are understanding of other people’s perspectives, you’ll be fine. For example: I am curvy and i like accentuating that (not what the tailor wanted for me). After I communicated how I did not want to hide my curves, I was able to get the tailored fit I wanted.