i just got chance to use both garmin and papago last raya....
this is what i can conclude:

GUI - Garmin
Screen sensetivity + ease - Garmin
Map detail - Papago (papago will detail the gas station with exact icon such as petronas, shell etc, / same goes to church, mosque and temple. Garmin just show church as icon for holy place )
Road suggest - Papago (i run same destination, seem that papago show the most recommended road.. )
Price / practical - Papago