1. Wireless sound sync. (750)
2. Display area on the 750 is 0.1% more (too small to matter?)
3. The 750 has Dolby Vision,.
4. The 750 use 10 less Watts power (75W)
5. The 750 weighs 0.7 Kg less.
6. The 750 notes "True Color Accuracy" with no real explainer what it is.
7. The 750 includes the LG Magic Controller and the other you buy this.