my favorite busty JAV is Sora Aoi i personally think that she has the prefect set of breast. For starters their nice and big at 90 G Cup. Their firm with beautiful shape.
Other Large Breast JAV that i like are Hikari Hino, Kirara Asuka, Yuma Asami, Haruka Sanada, Rio Hamasaki, and Saki Tsuji.