If you have Amazon Prime, you can stream all their Shaw Brothers titles in HD for being a member.  Amazon Prime is $120 and comes with free streaming videos and 2-day shipping. If you don't want to pay the annual fee, each title is $3.99 for SD and $6.99 for HD.  In my opinion, since they remastered these titles for DVD, they look just fine on SD. If you want the best image quality, then pay a little more for HD, since Bluray version of these titles are rare. Many of these films never made the transition to Bluray (or finding the Bluray is a rarity), so HD Digital is your only option.

Sample titles: