after review different gp unit -lrb- c320 , c330 , Street pilot , etc -rrb- , I finally pull my trigger and buy the c340 . this be the first GPS unit I have ever own . when I receive the unit , I turn it on right away . I do not even look at the menu -lrb- 1 page -rrb- before I start use it . very straight forward and very easy to use . I would say it be very easy to overcome the learning curve with the c340 . so far I dont see any major problem except get poor signal after `` sit '' under a bridge over several minute or lose signal in the basement inside a structure . I believe this be not really a problem as other gp -lrb- s -rrb- have the same problem and plus that make no sense to use the gp inside a structure . this unit have a sd card slot and I may buy the Europe Map CD to test it in Europe ... . if I have a chance . pro : Compact , easy to use , good battery life con : hmm ... get poor signal after `` sit '' under the bridge under a while conclusion : the unit do exactly what it should -- take you to the destination in the shortest distance . but of course , it do not have the AI : 1 -rrb- to make short cut like get into some side street 2 -rrb- take stop sign into account