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Fine nav unit
Ok I bought this product before reading any reviews. I got it up and running and it works great! I live in California and have had no problems as far as finding destinations and reaching them. I got this paticular unit because it was $139.99 marked down from $399.99. I only bought it for the navigation and have no interest in the other "features" so I am very happy with it. It is hard to see with sunglasses on but the thing talks to you so.....yeah. I would recomend this unit for anyone who wants just a GPS unit. Who the hell is looking at pictures while driving anyway?

Delphi NAV-300 Review
I bought this GPS around Christmas - 2007 for $150. It lists for $399. I had originally ordered another GPS but the store, where I made my purchase, lost my original order. I agreed to accept the Delphi NAV-300 because it was supposedly of equal or greater value.

The good, the NAV-300 does what it is supposed to do. Punch in a destination and it gets you there, as long as the destination is on the GPS map. I was able to find a particular place in Boston, MA that I would never have found without it. It worked well under a mile of road tunnel.

The bad, I noticed a few quirks right way. For example, when driving on the interstate, right in the middle of the highway with no exits approaching, it will tell you to, "Now turn left," making it necessary for me to turn the volume down. Another problem with this particular unit is that I have not seen a single map update since I purchased the NAV-300. I noticed recently that the NAV-200 had a map update through a third party vendor for $99. The other day, I went to Gray, Maine and it could not find a road. When traveling a stretch of newly built highway, the GPS went off the map. I am guessing I will have to eventually pay for a new map if I want improved service.

This GPS works fine, most of the time, with the existing map but it certainly is worth no more than the $150 that I paid for it, especially if I have to pay a high price for future map updates. I would strongly recommend another brand because it seems that Delphi does not offer maps for any of their GPS units and the NAV-300 is supposed to be a higher-end model.

Buyer beware - do not purchase a GPS unless the manufacturer promises, up-front, free map updates for the life of your unit, otherwise, you will be paying down the road (no pun intended).

Unshaded directions
I was disappointed to find out that if you are wearing sunglasses, you can't see the screen. While the NAV300 works great, I was also disappointed with the voice commands. They are hard to understand and don't have a TX drawl. I think a cheaper model would be a better buy. I like the Bluetooth, but the MP3, video, pictures, etc. are wasted features. The speed alert is very helpful on major highways and POIs are a great addition to plain roadway signs.

Designed without the Customer in Mind
I would not recommend this product unless you want to be frustrated. The DVD instructions did not work in any DVD player I had. Then I discovered I must use a pen stylus for inputting addresses but there was no place on the unit to store the stylus. I guess they assume you are going to buy your own velcrow to keep from losing it. The idea that you need a stylus is very bad as with a Garmin your fingers do the work. I had a hard time trying to figure out how to input correctly on this unit. But without instructions on their DVD that did not work I wanted to call their customer support. It was Saturday morning and I called. They told me they have no Saturday or Sunday business hours and to call back Mon-Friday 8-5. This is my working time so that does not work for me. I guess Delphi has not figured out they are selling a customer product which requires some support and their customers would like support when they are not at work themselves. In any case, I returned the unit to Delphi and purchased a Garmin from Sams Club. I needed no assistance on the Garmin and quickly had it taking me to destinations without a stylus.
I paid a little more but there is no comparison. I suggest Delphi get some real marketing people working with their engineers in the future.