Is a 6-inch or 8-inch GPS screen better?

An 8-inch screen (DriveSmart 86) shows more map detail and larger, easier-to-read text, which many older drivers prefer, but it takes up more windshield space and can obstruct your view in a small cabin. A 6-inch unit (DriveSmart 66) is the mainstream sweet spot. Verified-purchase ratings for both sizes are similar, so choose based on cabin space and eyesight.