I'm a bit slow on the uptake but I've figured out why you're interested in this thread. The mcse gives it away. The ever curious techno weenie that always wants to take on new, different, and interesting challenges just cuz you can. Takes one to know one. I'm not an engineer but I've got years of electronics and IT experience including hardware, Excel, and Access.
Like you said, may not be the greatest unit out there but it does do a lot. That being said, using it this last week I was headed home so I punched up home (saved as a favorite) and half hour later the unit was still displaying the rotary because it didn't know what to do. Had a good satellite lock. Did a restart a couple of times but the only way I got it to work was to enter in my address manually. I'm still going to keep the Garmin with me especially since I have lifetime map updates.
Weather channel did come in handy for me last week.
I'll be curious to see if the SD can be used for anything but the GPS.
2015 Greyhawk 29MV
Honda CRV toad with Blue Ox baseplate
Ready Brute Elite towbar with braking system
TST 507 Flowthru TPMS