rp6conrad said..The ublox M10, this is the Beitian BE xx series, is the sweet spot now ! This module has the lowest power, and the highest sensitivity, and can be set to "high navigation rate". Although the M9 series (Beitian BK series) han handle a higher sample rate (up to 25 Hz), the power consumption is higher and the sensitivity is lower. The M8 (Beitian BN series) is the oldest one, with a high power consumption and lower sample rates.
I use always the Beitian BE182, small formfactor, but a thicker ceramic antenna as the BE180. The BE122 is the smallest, but has solderpoints in stead of a connector.
Greetings, Jan.

Does the antenna work ok like that half tucked under the lillygo PCB / screen ?