Summary: I upgraded from the 4000 to the 5000 and couldn't be more pleased. The "remember route" feature is what I was after and it works perfectly. Cobra, in my opinion, makes the best GPS on the market.
Summary: I purchased the MNA-2300EXT external GPS antenna for this model from Cobra along with the cable adapter that converts the four contact mini plug to the RJ11 telephone type connector used on the antenna. The GPSM-5000 will not recognize the external antenna. The adapter was purchased directly from Cobra for use with these units. However I believe the MNA-2300EXT has never been compatible with the GPSM-5000 receiver.
Summary: I miss not getting to use this GPS, due to not being able to get new maps since the Cobra no longer provides them. It was the best GPS of those that I have since purchased, like Magellan, Garmin and TomTom. The Cobra NAV One 5000 had the best screen, even in the brightest sunlight; and a mighty nice big screen. It seems that Cobra could have worked out a few kinks, but I guess Cobra got tired of trying to fix the problems they had.
Summary: I am glad to have found the Cobra Navigation system at a great price. The service that you provided in mailing the equipment was as promised. The device operates nicely and has everything as expected. The Cobra Navigation System is the king of them all.
Summary: I have used the cobra nav one 5000 for about two years.I bought it for the screen size but love the red light camera warning feature.it sounds like a camera clicking when warning you.I have just purchased another one as the first one was dropped and isn't working now.