$ Bottom line: Which one is better?
Bottom line: Samsung KS9500 is better.
Samsung KS9500 is better when we compare KS500 vs KS9500 as it has a better picture quality, gets brighter and handles reflections better.
Samsung KS9500 Vs Samsung KS8500: DESIGN
Stand; the two TVs have stands
Wall mount; the two TVs can be mounted on wall
Borders; Samsung KS9500 has 0.39” (1.0cm) whereas Samsung KS8500 has 0.35” (0.9cm)
Max temperature; KS9500 has 101oF (38oC) whereas KS8500 has 103oF (40oC)
Average temperature; KS9500 has 92oF (33oC) whereas KS8500 has 96oF (35oC)
Bottom line: KS9500 is better
Samsung KS9500 Vs Samsung KS8500: PICTURE QUALITY
Native contrast; KS9500 has 6663:1 whereas KS8500 has 7143:1
Local dimming; KS9500 and KS8500 have local dimming
SDR real scene peak brightness; KS9500 has 519cd/m2 whereas KS8500 has 506cd/m2
HDR real scene peak brightness; KS9500 486cd/m2 whereas KS8500 has 467cd/m2
50% Std. Dev; KS9500 has 3.258% whereas KS8500 has 3.665%
50% DSE; Samsung KS9500 has 0.57% whereas Samsung KS8500 has 0.186%
Viewing angle; Samsung KS9500 has 4.7, the same as Samsung KS8500.
Black uniformity; Samsun KS9500 has 9.5 whereas Samsung KS8500 has 9.1
Native std. Dev; Samsung KS9500 has 0.531% whereas Samsung KS8500 has 0.623%
Total reflections; not tested
Pre-calibration; Samsung KS9500 has 8.0 while Samsung KS8500 has 6.4
White balance dE; Samsung KS9500 has 2.65 while Samsung KS8500 has 4.65
Color dE; Samsung KS9500 has 2.37 whereas Samsung KS8500 has 3.19
Gamma; Samsung KS9500 has 2.11 whereas Samsung KS8500 has 2.16
Post calibration; KS9500 has 9.8 whereas KS8500 has 9.6
White balance dE; Samsung KS9500 has 0.28 whereas Samsung KS8500 has 0.59
Color dE; KS9500 has 0.33 whereas KS8500 has 0.46
Gamma; Samsung KS9500 has 2.20 whereas Samsung KS8500 has 2.23
Bottom line: Samsung KS9500 is better
Samsung KS9500 Vs Samsung KS8500: MOTION
100% response time; not tested
Flicker-free; Samsung KS9500 has 2.8 whereas Samsung KS8500 has 4.8
Black Frame Insertion (BFI); KS8500 has optional BFI
Motion interpolation; the two TVs have motion interpolation 30fps and 60fps
Variable refresh rate; not tested
Bottom line; Samsung KS8500 is better
Samsung KS9500 Vs Samsung KS8500: INPUTS
Input lag; the two TVs have 9.1
Supported resolutions; the two TVs have 9.0
Total inputs; each TV has 4 HDMI, 1 Digital optical audio out, 1 Tuner (cable/Ant) and 1 Ethernet. Samsung KS9500 has 2 USB while Samsung KS8500 has 3.
Input specifications; each TV has HDR10, HDMI2.2 Full bandwidth, CEC and HDCP 2.2
Audio pass-through; each TV has ARC, 5.1 Dolby and DTS
Bottom line: Samsung KS9500 and Samsung KS8500 have the same input features.
Samsung KS9500 Vs Samsung KS8500: SOUND QUALITY
Low-frequency extension; Samsung KS9500 has 60.00Hxz whereas Samsung KS8500 has 75.51HZ
Std. Dev. @ Max; Samsung KS9500 has 5.48dB whereas Samsung KS8500 has 6.75dB
Max; Samsung KS9500 has 90.5dB SPL whereas Samsung KS8500 has 92.1dB SPL
Distortion; Samsung KS9500 has 7.4 whereas Samsung KS8500 has 7.3
Weighted THD @ Max; KS9500 has 0.168 whereas KS8500 has 0.288
Bottom line: KS9500 is better
Samsung KS9500 Vs Samsung KS8500: SMART FFEATURES
Smart OS; the two TVs operate on Tizen (2016)
Interface; not tested
Ad-free; the two TVs are ad-free
Apps and features; the two TVs have preinstalled apps and features.
Remote control; not tested
TV controls; the two TVs have TV controls that can be used to adjust volume and TV channels
Bottom line: Samsung KS9500 and Samsung KS8500 have the same smart features
Conclusion
In this review, when we compare Samsung KS8500 Vs KS9500, Samsung KS9500 is slightly better than Samsung KS8500 because it has a better picture quality, gets brighter and handles reflections better.