Greg Linton
Paul,
According to this comparison, the screens look to be virtually the same.
https://www.gpscentral.ca/products/garmin/zumoseriescomparison.html
That said, I do like some of the other 396 features that the 665 does not sport. Plus, I’ve not had great luck with used electronics, so the 1 yr warranty is probably a safer bet for me.
Thanks for your candor!
Greg