Best budget phones for Pokemon Go August 2018

Searching the Q&A most recommendations seem to be a year or so old.

Currently using a 2 yr old Moto G4 Plus, and the second battery is now going and it overheats badly, so in need of a replacement.

Any recommendations around the £150 - £230 UK Sterling price mark? Was wondering about the new Moto G6 or the Moto G6 Play, but wondered what their batteries are like? Nokia 6.1?

Thanks