I was finally able to get the Wayfinder .sis file, and used it finally at lunch today.
I have three installed on my phone:
Wayfinder:
1. works well, downloading maps was a little slow, but there's an option when I get home to download some maps to my memory card and use those.
2. typing in a location to go to wasn't all that easy while driving, so i have yet to test that functionality.
3. i did notice that it sporadically zooms in and out, which is kinda annoying, but other than that I was real impressed.
Nav4All:
1. won't recognize my GPS unit so useless to me for now.
MGMaps:
1. same as Nav4All.
Nav4All and MGMaps are both Java apps, and with them running, my backlight acts sporadically. one of them has the option to keep the backlight on, which doesn't work. The backlight basically doesn't work with these two programs, at least on my N73. So pretty useless.
I have a three month trial with Wayfinder, and hope to try Route66 and maybe TomTom before making a decision. I wish I wish I wish that Google Maps supported a freakin GPS unit, that would be off the hook.