I just wanted to pop back in and give a huge +1 to Sygic.
I got it installed with the Mexico maps (around 500mb) and I wasn't expecting miracles.
Not only does it show the interior roads in my little compound, it also has the tiny little village I use to test GPS maps. Garmin doesn't, and Google Navigation (which is a hacked copy that works here) is useless as there is no cell service within 20 miles of the place.
Routing is almost instant, and so far looks accurate and seems to offer the most practical path.
It's about $35 and looks to be worth every penny. I'll update this as I try it for real. If I had found out about this earlier I wouldn't have bought the Nuvi 500 a few weeks ago for $170.
Young enough to think I can. Old enough to know I shouldn't. Stupid enough to do it anyway
'13 Duc Multi GT & '10 Vstrom 1k