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Light up and flash.
#beingthatpointingouttheobviousdickheadontheinternet -
Basically the top horizontal one, when it's time to turn, it light up from left to right repeately if there's a right turn soon (for example), it's noticeably easier for the like of me to see a turn.
The vertical one, useful to do Strava segment on, during a starred segment, blue in middle is "on track", orange above mean you're ahead, and green below is you're behind.
Screen look better, but normal ELEMNT battery is great, and more screen estate is great as well as the LED (very useful for turn by turn, funwirh Strava segments).