Vivo Nex runs on Android 8.1, it supports all OS-specific gestures controls which have been customized and designed to support large screen phones. There are a lot of gesture control including:
You can check on some Hidden features of your Android here:
You can see detailed specifications here: Vivo Nex
I will recommend you Vivo NEX. It comes with a 6.59-inch Full HD+ display with a screen resolution of 1,020 x 2,316 pixels. The performance of the device is backed by Qualcomm Snapdragon 710 (2.2GHz Kryo 360 Dual-Core and 1.7GHz Kryo 360 Hexa-Core processors) aided by 6GB RAM. Equipped with a powerful 4,000mAh Li-Polymer battery, Vivo Nex is an excellent smartphone to buy.
You can also check the complete comparison here: Vivo NEX S vs Vivo V9
I will recommend you Vivo NEX. It comes with a faster CPU and more RAM than the Note 8 (Qualcomm Snapdragon 845 Octa-core 2.8 GHz, Quad core, Kryo 385 + 1.8 GHz, Quad core, Kryo 385) and it comes with more onboard storage. It is slimmer and still manages to pack a bigger battery (4000mAh). The Vivo NEX is an excellent smartphone which comes with some exciting features. Overall, this is a perfect smartphone amongst the two.
You can also check the complete comparison here: Samsung Galaxy Note 8 vs Vivo NEX
I will suggest you go for Oppo Find X. Although these two smartphones share the almost same specs, the Find X comes with a better camera than the Nex. The Oppo Find X is armed with a dual primary camera setup with 16MP and 20MP lens. The camera setup can record 4k videos at a speed of 30 fps and has CMOS sensor and Phase detection autofocus. Find X also has better storage options along with expandable memory card slot. This massive storage helps you store everything you want to. Moreover, the addition of a quick charging reduces the wait time before you get back to action. It also supports NFC.
You can also check the complete comparison here: Vivo NEX vs Oppo Find X
I will recommend you Vivo NEX S. It comes with a better processor and more RAM.
It is powered by two Kryo 385 quad-core processors are present that have 1.8GHz and 2.8GHz clock-speeds respectively. The processor is further assisted by an 8GB RAM and an Adreno 630 GPU. The combination delivers a quality performance and kit ensures that you can play heavy games as well as run multiple tasks.
You can also check the complete comparison here: Vivo NEX vs Vivo NEX S