Auditioned both and eventually went for Vivitek H1080FD due to many reasons. In my case, the decision was made primarily because the offset and the projection distance of the Vivitek is more suitable to my set-up. You can read lots of reviews comparing the two in the net, and most reviews seems to prefer H1080FD over HD20 based on several factors. As for me, im very happy to have purchase the Vivitek. It is simply stunning. A great value for money...