I found the 440, of all places, bass pro shop. I was a little unsure of buying it just because I know it is a little out of date, but I got it pretty cheap($450). I am on a tight budget anyway so I decided to go ahead and get it. Why would you say that the GPS is not suitable for a boat over 30 MPH? I am really just getting into the boating world and really don't have a clue about GPS's, I had no idea speed mattered? I was looking at the 545s like you suggest, but it was a little high, or at least where I was looking. How much do you sell them for? I have 30 days to return it and it's not out of the box yet, was there last one and figured I better get it. You were also telling me about the g2 charts, so basically you pay $300+ just for a better picture?