$ Bottom line: Which one is better?
Bottom line: Sony X900E is better.
In the following review of Sony X900E Vs Samsung NU8000, Sony X900E is better as it has better local dimming feature and reflection handling hence suitable for wider variety viewing situations.
Sony X900E Vs Samsung NU8000: DESIGN
Stand; the two TVs have stands
Wall mount; Sony X900E has VESA 300×300 whereas Samsung NU8000 has 200×200
Borders; Sony X900E has 0.43” (1.1cm) while Samsung NU8000 has 0.35” (0.9cm)
Max thickness; Sony X900E has 2.28” (5.8cm), the same as Samsung NU8000
Max temperature; Sony X900E has 95oF (35oC) while Samsung NU8000 has 96oF (35o)
Average temperature; Sony X900E has 90oF (32oC) whereas Samsung NU8000 has 89oF (32oC)
Bottom line: Samsung NU8000 is better
Sony X900E Vs Samsung NU8000: PICTURE QUALITY
Native contrast; Sony X900E has 5411:1 while Samsung NU8000 has 5461:1
Local dimming; the two TVs have local dimming
Backlight; Sony X900E has Full-Array while Samsung NU8000 has Edge
SDR real scene peak brightness; Sony X900E has 481cd/m2 whereas Samsung NU8000 has 509cd/m2
HDR real scene peak brightness; Sony X900E has 546cd/m2 whereas Samsung NU8000 has 529cd/m2
Gray uniformity; Sony X900E has 7.6 while Samsung NU8000 has 8.0
50% Std. Dev; Sony X900E has 3.784% while Samsung NU8000 has 2.775%
50% DSE; Sony X900E has 0.159% whereas Samsung NU8000 has 0.161%
Viewing angle; Sony X900E has 5.0 while Samsung NU8000 has 5.3
Black uniformity; Sony X900E has 7.3 while Samsung NU8000 has 8.7
Native Std. Dev; Sony X900E has 1.203% while Samsung NU8000 has 0.679%
Total reflections; Sony X900E has 3.4% while Samsung NU8000 has 5.8%
Pre-calibration; Sony X900E has 8.3 while Samsung NU8000 has 7.8
White balance dE; Sony X900E has 2.15 while Samsung NU8000 has 1.98
Color dE; Sony X900E has 2.15 whereas Samsung NU8000 has 1.98
Gamma; Sony X900E has 2.17 while Samsung NU8000 has 2.13.
Picture mode; Sony X900E has custom while Samsung NU8000 has movie
Post calibration; Sony X900E has 9.2 whereas Samsung NU8000 has 9.1
White balance; Sony X900E has 0.25 while Samsung NU8000 has 0.21
Color dE; Sony X900E has 1.97 while Samsung NU8000 has 2.25
Gamma; Sony X900E has 2.20 while Samsung NU8000 has 2.21
Bottom line: Sony X900E is better
Sony X900E Vs Samsung NU8000: MOTION
100% response time; Sony X900E has 10.7ms while Samsung NU8000 has 12.8ms
Flicker-free; the two TVs don’t have
Black Frame Insertion (BFI); the two TVs have optional BFI
Motion interpolation; the two TVs have motion interpolation 30fps and 60fps
Native refresh rate; each TV has 120Hz except 49” for Samsung NU8000.
Variable refresh rate; Samsung NU8000 has FreeSync
Bottom line: the two TVs have the same motion features
Sony X900E Vs Samsung NU8000: INPUTS
Input lag; Sony X900E has 8.2 whereas Samsung NU8000 has 9.4
Supported resolutions; Sony X900E has 9.1 while Samsung NU8000 has 8.8
Total inputs; each TV has 1 Digital optical audio out, 1 tuner (cable/Ant), and 1 Ethernet. Sony X900E has 4 HDMI, 3 USB, 1 Analog Audio out, 1 shared component, 2 shared composite in and 1 IR in while Samsung NU8000 has 2 USB.
Inputs specifications; each TV has HDR10, HLG, HDMI 2.0 Full bandwidth, CEC, HDCP 2.2 and Wi-Fi support. Sony X900E has USB 3.0 while Samsung NU8000 has HDR10+
Audio pass-through; each TV has ARC, 5.1 Dolby Digital and 5.1 DTS
Bottom line: Samsung NU8000 is better
Sony X900E Vs Samsung NU8000: SOUND QUALITY
Low-frequency extension; Sony X900E has 142.54Hz whereas Samsung NU8000 has 67.27Hz
Max; Sony X900E has 90.1dB SPL whereas Samsung NU8000 has 87.0dB SPL
Distortion; Sony X900E has 6.1 while Samsung NU8000 has 6.8
Weighted THD @ Max; Sony X900E has 14.200 whereas Samsung NU8000 has 1.235
IMD @ Max; Sony X900E has 21.65% whereas Samsung NU8000 has 3.68%
Bottom line: Samsung NU8000 is better
Sony X900E Vs Samsung NU8000: SMART FEATURES
Smart OS; Sony X900E operates on Android TV version 6.0 while Samsung NU8000 on Tizen version 2018
Interface; Sony X900E is average and not smooth while Samsung NU8000 is easy to use and not smooth.
Ad-free; Sony X900E is ad-free whereas Samsung NU8000 has ads
Apps and features; the two TVs have apps and features
Remote; Sony X900E has large while Samsung NU8000 has small
TV controls; the two TVs have TV controls
Bottom line: Sony X900E is better
Conclusion
Sony X900E is a better TV in this review because it has better local dimming feature and reflection handling hence suitable for wider variety viewing situations.