Lane Assist in my experience is more accurate than PhotoReal junction view, in that we have a tricky intersection nearby. The spoken voice and PhotoReal provide the wrong navigation information if you are not using the HOV lanes, but the Lane Assist has always "known" what to do.
Having said that, 99% of the time PhotoReal is helpful, and has amazing detail. I'd like it better if it provided a night view after sundown, but my 3790 always shows "daytime" with a blue sky.
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