I have get my i3 for six month now . other than the occasional hard-freeze -lrb- require the removal of car adapter power and open the battery compartment door to kill power and restart -rrb- and also some inaccuracy in the map datum -lrb- I do not attribute this issue to the unit per se but the datum provider -rrb- , the unit have be well worth every cent I pay for it . I live in Seattle , but I take my i3 along with I to Cabo San Lucas in Mexico -lrb- about 2000 mile away -rrb- , and also to Singapore -lrb- over 8000 mile away ! -rrb- , and in both case , the unit be able to figure out where it be after it take well over 10 minute acquire satellite . it just do not have the correct datum to work in those place . Thought that be something fun to know .