Oh, you won't be disappointed with the BDP-83. I assume it will go into your HT so it will be quite a step up from 971H for DVDs and Blurays are amazing both for video but also audio decoded in the BDP-83. Plus it does SACD, DVD-A, etc, etc. I don't have a 1080p display and all that extra data on a BD disc creates a very nice picture. I'd expect you to easily notice improvement using your projector.
_________________________
AvFan
Outlaw 976 | ATI 2005 | M&K 850s Left, Center & Right, Surround-55s, MX-70B Sub | Harmony 950 remote | Panamax 5100 | OPPO UDP-203 | LG OLED55B7