So, this summer's trip to Oregon has given me the first real chance to rasses the performance of the GPS software and hardware.
GPS lock
as a whole, the GPS lock was mediocre but generally adequate. When going through tunnels, it lost GPS lock but regained it after 5 seconds after leaving the tunnel if it had a good lock going in. On the other hand, from a cold start, it took up to a few minutes to gain a lock and it seems it needs at least 9 sats. to gain a lock. Even worse, the GPS looses lock in open skys and needs to be cycled before being able to determine location again. This always seems to happen when you need the GPS most, right before exits or turns. Sometimes it has trouble with the lock and places the unit 50 to 100 feet from where it actually is. This is not too bad on highways when there are no other streets for it to "best-fit" to, but in a city, it renders the GPS useless and a liability. Apart from that, it holds a lock through forests, cities, under bridges, etc. It only looses lock due to obstructions if it is inside a house or a tunnel.
Mapping software
It lacks some POIs and sometimes crashes, but once you figure out to always use "by city" first, it works pretty well. It handles recalculations pretty well and is fast enough for city driving if it has a good lock.
Bugs/Problems
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