I really appreciate your feedback. This is what I meant that I get more from those with experience than ever trying to visualize how something will work for you based on only reading product information. SI sounds neat I am sure it is good technology but I got a feeling I should take it on later. But the GPS mapping is it and the 520 is priced right so this pretty much makes up my mind and now all I got to do is swing some cash to make it happen. Thanks!!!

kc