IPhone 6s or Google Pixel? Or another?

Been looking into getting a new phone and, from what I see, I can get a 32GB 6s for the same price as 128GB Google Pixel. My budget is £30 per month. So, any info, or other phones to check out. I have had iOS and Android phones in the past, most recently I experimented with Windows (bad idea), so I would like to stick to iOS or Android, preferably Samsung, because they look very good and professional, as do iPhones.

Added (1). EDIT: The £30 per month also includes insurance.

Iphone 6 is better