Samsung Galaxy S9 is a better choice in comparison to Samsung Galaxy s8 and Samsung Galaxy Note 8 as it comes with a better processor and a better Dual camera configuration.
Let us check the comparison of the three devices in details:-
Samsung Galaxy S9 comes with a better 2.3 GHz Samsung Exynos 9 Octa 9810 processor which is much better in performance in comparison to 2.3 GHz Samsung Exynos 9 Octa 8895 and 2.3 GHz Samsung Exynos 9 Octa 8895 processor.It can be proved by comparing the benchmark score of the given devices.
Antutu Benchmark score for Samsung Galaxy S9 is 265,267 and for Samsung Galaxy S8 is 194,971 and for Samsung Galaxy Note 8 is 172,200 (Higher the better).
Geekbench score (Single Core) for Samsung Galaxy S9 is 3648 and for Samsung Galaxy S8 is 1379 and for Samsung Galaxy Note 8 is 1989 (Higher the better)
Samsung Galaxy S9 is a better choice as it comes with a much better camera configuration and performance as it offers a better (12+ 12 MP) primary Dual camera in comparison with 12 MP primary camera in Samsung Galaxy S8 and Samsung Galaxy Note 8. With the addition of Dual camera configuration, Samsung Galaxy S9 offers a much better camera performance in all outdoor and indoor situation.
Now it is completely understood that Samsung Galaxy S9 is a much better choice in comparison to Samsung Galaxy S8.
For all the other details of comparison, you can check the following link Samsung Galaxy S9 vs Samsung Galaxy S8
Though both the device offers the same 2.3 GHz Samsung Exynos 9 Octa 9810 processor, But the Performance of Samsung Galaxy S9 Plus is much better processor.in comparison to Samsung Galaxy S9 and It can be explained by comparing the benchmark score of the two devices.
Also Samsung Galaxy S9 plus comes with a better 6.2-inch screen size in comparison to the 5.8-inch screen in Samsung Galaxy S9. Bigger screen size always gives a better smartphone experience as you can have much clarity and a much better movie watching experience on your device.
Now it is all clear that Samsung Galaxy S9 Plus is a better device in terms of overall specs and performance.
To check all the other details, you can visit the following link Samsung Galaxy S9 Plus vs Samsung Galaxy S9
I will recommend you to go for the Oppo Find X as it is a better performer. The Find X comes with more amount of RAM (8GB as compared to the 6GB in the Note 8) and is equipped with two Kryo 385 processors as a 2.649GHz quad-core and a 1.766GHz quad-core. It performs better in terms of the camera as well. With the 16MP resolution, it can record 4k videos at a speed of 30 fps and has CMOS sensor and Phase detection autofocus. Moreover, it comes with a bigger battery and more internal storage (256GB). The retractable-motorised panel on top makes the Find X stand out as one of the most innovative smartphones weve seen in a long time.
You can also check the complete comparison here: Samsung Galaxy Note 8 vs Oppo Find X
Yes, It does have a liquid cooling system. Though it is not as advanced as the carbon-water cooling system in Samsung Galaxy Note 9, it still performs very well to keep your device cooler for a longer time.
Check out what liquid cooling system actually means-
Check Full Specifications: Samsung Galaxy Note 8