Depends on how often you watch 3D movies, I think Sony 95 should be better for 3D, otherwise JVC X30, Sony 30 or Panasonic AE7000 should be reasonable enough for 2D if you want to save some money from projector side.
Only HDMI 1 output of 751 will have Qdeo processed video output, therefore you must use 751's HDMI 1 output for projector and HDMI 2 output for audio to your AV amp.
For details on how to kick-in the Marvel Qdeo processor on 751, please refer to other earlier threads in Hiendy.