I am also biased towards Anker after reading tons and tons of reviews. Xiaomi may be good but there are very less reviews about its charger
And price difference between two is around 1k because many a times xiaomi one is on sale and cost around 1350/- and cheaper things mostly have cheaper components
What the main difference i have found among various chargers after watching a lot of reviews is the heating issue of both charger and iPhone
Good one dont heat but bad ones heat themselves and iPhone as well
I presently have Tronsmart travel Adapter wcp05 which I bought long time ago for traveling abroad and never thought of its great uses but its PD port is exactly taking same amount of time (1hr 44min) for iPhone 12 which Apple charger takes (in YouTube videos) from 0 to 100% but was just having desire to buy a tiny fast charger as Tronsmart WCP05 is huge charger
And last thing anyone recently imported mobile charger from AliExpress? Is there any customs duty on it? Was thinking of getting Anker Charger for iPhone but then I thought better to ask someone before ordering instead of regretting afterwards!!