Glad I bought from AndaSeat!
I did not need customer service, but the delivery was VERY fast (faster than expected!) and the quality of my chair is really, really nice (you do put it together yourself, so keep that in mind). I was a little skeptical and wondered for a while if I should just get a used Hermann Miller chair, but I chanced it and bought from AndaSeat on the recommendation of my best friend whom owns one. Very glad I did. This chair and the lumbar pillow I bought are so comfortable. I actually enjoy sitting at my desk now!