- Light source life 5,000 h vs 3,500 h
- Contrast ratio (dynamic / claimed) 20,000:1 vs 10,000:1
- HDMI inputs 2 vs 1
- Resolution (on screen) 1920 × 1080 (Full HD) vs 1920 × 1200 (WUXGA)
- Built-in speakers (total output) 2 W vs 3 W
10 home cinema projectors at a similar price that compete with the H6521ABD — what each does better, what it gives up and how the price compares.