Coolpad Note 5 is powered by Snapdragon 617 1.5GHz processor and is supported by a 4GB plan. It has a 5.5 inch screen which makes sure that you watch movies easily without much problem. On the other side, Lenovo K6 Power is powered by the Snapdragon 430 processor and is supported by a 3GB RAM. The screen in K6 Power is 5 inch.
I would recommend you go for the Coolpad Note 5 as it offers you a bit better configuration, for 1k extra. Le us see how is it better:
1) RAM: Note 5 offers you a 4GB RAM as compared to that of Lenovo K6 Power's 3GB RAM.
2) Bigger Screen: You get a better viewing experience on Coolpad Note 5.
3) Antutu Benchmark of Coolpad Note 5 is 46607 where as that of Lenov K6 Power is 44008 (Higher is better).
Verdict: I would recommend you go for the Coolpad Note 5. It offers you better features than the K6 Power.
The displays on both phones are great, but if you're primarily looking to consume multimedia, the K6 Power edges the Redmi 3S Prime out.
However, if battery life is your main consideration, then the Redmi 3S Prime is the phone to get. In all the phones I used last year, there wasn't one that came close to the battery life of the Redmi 3S Prime. MIUI's aggressive memory management combined with a huge battery means you'll easily get two days of battery even if you're a heavy user.
As per the expected specs Mi4 Prime should be better ,It looks stylish, features IR blaster and has a strong configuration for handling day to day task easily. The gaming performance and the camera quality are excellent.Lenovo K6 Power 32GB vs Xiaomi Redmi 4 Prime
When compared to Coolpad Note 5 Lite, the Lenovo K6 Power certainly looks good with its better processor, bigger battery, higher RAM, and a better display with higher screen resolution. The Lenovo K6 Power may be Rs 1,800 costlier than Coolpad Note 5 Lite but it beats the Coolpad Note 5 Lite hands down on several counts and thus worth the extra bucks.