Best Deals in Automotive GPS Systems in Price Range of $150-$300
Garmin Nuvi 255W
The Garmin Nuvi 255W offers 4.3inches wide touch screen, speed limit display, text-to-speech converter, and maps of all states of US as well as Canada; you can read more about Garmin Nuvi 255W here
Garmin Nuvi 265WT
If you want something newer, then you can pick Garmin Nuvi 265WT that adds Bluetooth connectivity for hands free cell phone use, and lifetime traffic to the capabilities of 255W.
Garmin Nuvi 1300
Garmin Nuvi 1300 is yet another recent auto GPS navigator that is worth a shot. It was launched at a very high price, but the pricing came down drastically and currently it is available for just $150 at Amazon.
Garmin Nuvi 750 & Garmin Nuvi 755
Garmin Nuvi 750 & 755 are two of the powerful fully featured auto GPS devices that offered advanced functionalities including map screen enhancements, the HotFix GPS technology, 3-D lane assist, route planning, and much more.
These Nuvi units facilitated faster screen redraws, and came with free lifetime traffic updates, which was one of their major advantage over the rest of the auto GPS devices.
They also provided 3-D building view, but they lacked Bluetooth support, had severe problems with FM transmission, and were badly underpowered.
You can take a look at comparative analysis of Garmin Nuvi 750 & 755 here
Garmin Nuvi 760
Launched at a very high price, the Garmin Nuvi 760 soon became a common man's GPS as its pricing steeply dropped to around $150.
It features several capabilities that make it an ideal choice as an auto GPS navigator, which include multi-destination routing, an excellent windshield mount, 3-month free trial for receiving real-time traffic updates, Bluetooth compatibility, track log recording, and much more.
You can read the detailed review of Garmin Nuvi 760 here