was researching the 595LM to replace my NAV 5, and couldn't find any decent interface walk through videos on youtube. I made something quick in case it benefits others. I ended up returning it soon after. The Nav 5/6 both feel archaic, while the 595LM is a bit more modern yet still old world. I understand the need for a dedicated GPS device for some, i'm not going to argue that. For me though, I ended up choosing a jailbroken iPhone as my main device. I have it set up so I can run two apps side by side. Click on for the video ....