Hi there

Major differences are:

XD8005

• Motionflow XR 400
• Stand Design - Silver U Plate
• HDMI 1/4 - upto 9Gbps, HDMI 2/3 - upto 18Gbps

XD8599

• Motionflow XR 1000
• Stand Design - Dark Silver Plate
• HDMI 1/2/3/4 - upto 18Gbps

I cant see any other major differences other than those.

Cheers