There's a whole other thread dedicated to the discussion of 3D glasses for this projector:
http://www.avsforum.com/t/1448720/benq-w1070-144hz-compatible-dlp-link-3d-glasses
I don't think there is consensus on which are the "best" glasses as different things suit different people. But in terms of general performance, comfort and price, the front runners seem to be the 3DTV Corp or True Depth branded ones. You might want to post your question in that thread if you want to get some other opinions/options.
http://www.avsforum.com/t/1448720/benq-w1070-144hz-compatible-dlp-link-3d-glasses
I don't think there is consensus on which are the "best" glasses as different things suit different people. But in terms of general performance, comfort and price, the front runners seem to be the 3DTV Corp or True Depth branded ones. You might want to post your question in that thread if you want to get some other opinions/options.
