GPS navigation recommendations
 

I'm considering stepping up from google navigation and would like some pros and cons about the most popular navigation packages that will work on my Sprint Diamond.
What nav systems work best on our Diamonds, easy to use, not cost prohibitive, and overall comments on the various competing nav products out there.
By the way, just how many of them are out there that will work on a Diamond?
I ask because I thought some of them were for 'smartphones' only and/or had to be installed on a sd card to work.

Re: GPS navigation recommendations
 

free, killer gps app. (thanx tmz) http://forum.ppcgeeks.com/showthread.php?p=497191