The first thing you notice is that Sony went with a completely different design for the HX750 compared to the HX850. The seamless, monolithic design made way for a traditional edge around the screen, and the long, wide base of the HX850 has been replaced by a thin, u-shaped foot with only two ends sticking out from under the TV. It's an attractive design. The screen itself has been treated with an anti-reflection top layer, which we are big fans of. The HX750 has virtually the same features as the more expensive HX850, only the engine is a bit less advanced.
Any major computer upgrade generally requires a full software reinstall too. No so if you heed the advice in the guide to Upgrading a Motherboard without Reinstalling. PCSTATS Tips